O-Ring for Nemesis Muzzles and Handles - Sigalsub

The Sigalsub O-Ring for the Nemesis line is the essential original Spare Part for ensuring a perfect watertight seal at the connections between the barrel, muzzle, and handle of Nemesis series spearguns. With dimensions of Ø 26 mm and 3 mm thickness, it is designed to fit precisely onto the male inserts of the Nemesis handle and muzzle, ensuring a reliable hydraulic seal on every dive.

Compatibility

Original Spare Part by Sigalsub specifically for muzzles and handles in the Nemesis line, compatible with barrels with a 26 mm internal diameter. Suitable for both handles and single- and double-band muzzles in the Nemesis series, including standard, Pro, and Carbon PRO versions.

Technical Specifications

• Diameter: Ø 26 mm
• Thickness: 3 mm
• Compatibility: Sigalsub Nemesis line muzzles and handles
• Compatible barrel diameter: 26 mm (internal diameter)
• Package: 2 pieces

Function and Importance of the Spare Part

In Nemesis series spearguns, the watertight seal of the connections is provided by O-Rings positioned on the handle and muzzle inserts. These components ensure that no water ingress compromises the internal mechanical parts. Periodic replacement of the O-Rings is one of the essential Maintenance tasks for keeping the speargun in perfectly efficient and safe condition.

Recommended Maintenance

• Replace the O-Rings whenever you notice signs of wear, deformation, or loss of elasticity
• Always lubricate the O-Rings with specific silicone grease before assembly
• Check the integrity of the O-Rings before every spearfishing session
• Store spare parts away from heat sources and direct UV rays to preserve their elastomeric properties

Kit for Traditional Shafts - X-Power

The Kit for Traditional Shafts - X-Power includes a threaded bushing made from acetal resin, designed to ensure a watertight seal of the vacuum muzzle when used with the X Power 2.0/3.0 Speargun Kit. This feature provides protection against water ingress and greater durability for the firing system.

Kit Components

• One threaded acetal resin bushing with a dedicated washer seat and shaft pass-through hole;
• Two dynamic shaft sealing gaskets, one of which is already installed in the bushing, designed to maintain a proper seal and minimize leaks.

Compatibility and Dimensions

The kit is available for shafts with diameters of 6.5 mm, 6.75 mm, 7.0 mm, 7.5 mm and 8.0 mm, allowing it to fit the different standard sizes used in spearfishing with traditional spearguns.

Easy Assembly and Maintenance

The bushing assembly and disassembly system is simple and fast, with no tools required. Simply screw or unscrew the bushing from the muzzle to install or remove the terminal. This feature makes periodic inspection of the sealing gaskets easy, even with the speargun unloaded and under pressure, ensuring maximum sealing efficiency over time.

X-Shaft Free – X-Power Shaft Kit: Threaded Acetal Resin Bushing

The X-Shaft Free – X-Power Shaft Kit includes a threaded bushing made from acetal resin, designed to ensure the watertight seal of the vacuum muzzle when paired with the X Power 2.0/3.0 Speargun Kit. This component is essential for maintaining trim efficiency and muzzle functionality while in the water.

Kit Contents

• Two dynamic shaft seals, one of which is already installed on the bushing
• Front housing for washer
• Shaft pass-through hole with available diameters from 6.5 mm to 8.0 mm (6.5, 6.75, 7.0, 7.5, 8.0 mm)

Technical Features and Benefits

The bushing is made from acetal resin, a material known for its mechanical strength and light weight, essential properties for efficiency and durability in spearfishing and freediving.

Installing and removing the terminal is quick and easy, with no tools required. Simply screw or unscrew it directly from the muzzle, allowing the seals to be inspected and serviced in complete safety, even with the speargun still loaded and pressurized.

Applications and Compatibility

The kit is specifically designed for X-Shaft Free shafts and ensures an optimal dynamic seal, essential for accuracy and smooth power transmission in spearfishing and freediving activities.

Speed Stringer and Speed Needle Kit for Spearfishing

The kit includes the Speed Stringer and Speed Needle, tools designed for efficient handling of freshly caught fish during spearfishing sessions, avoiding carrying the fish directly on the belt and improving the flow of retrieval phases.

Operation and Use

The system is based on an automatic mechanism that lets you quickly get rid of the fish without having to stop, pass it to the boat, or pull the buoy toward you, allowing you to keep hunting without interruption.

The Speed Needle, a needle equipped with two eyelets at the ends, attaches to the clip located under the speargun handle. The floatline is connected to it, which in turn is connected to the Speed Stringer.

The Speed Stringer consists of a plastic-coated steel cable, with an eyelet at one end and a heavy swivel with a retaining tab at the other, designed to keep the fish close to the buoy.

How to Use

1. Once the fish has been caught, release the Speed Needle from the speargun handle.
2. Quickly pass the Speed Needle through the gills or another suitable point on the fish, as you would with a standard fish stringer needle.
3. The fish remains strung, allowing you to keep hunting without the inconvenience of having to carry it manually.
4. During the dive, the fish slides along the floatline until it reaches the buoy.
5. Near the buoy, the fish meets the Speed Stringer: the retaining tab prevents the fish from sliding off, keeping it securely anchored on the steel cable.

Technical Features

• Materials: plastic-coated steel cable for protection and high mechanical strength.
• Design: strategically positioned retaining tab for securely holding the fish on the buoy.
• Practicality: lightweight, ergonomic needle for quick and easy stringing of the fish.
• Efficiency: system that automates fish positioning on the buoy, optimizing spearfishing phases.

This kit is an ingenious technical solution for managing fish during spearfishing sessions, improving comfort, safety, and operating speed.

Kit 2 Pre-Tensioning Hooks + Line Guide - Sigalsub

The Sigalsub Kit 2 Pre-Tensioning Hooks + Line Guide is the complete solution for converting and optimizing roller and inverted roller spearguns. Made from high-quality stainless steel, the components in this kit ensure corrosion resistance, reliability in the water, and long-lasting durability.

What’s included in the kit

• 2 flat pre-tensioning hooks in stainless steel, for anchoring pre-tensioned bands to the speargun barrel
• 1 line guide in stainless steel, a pre-drilled plate with a loop for proper line management and guidance on roller spearguns
• Stainless steel mounting screws included in the package

Function and technical advantages

The pre-tensioning hooks attach to the underside of the speargun barrel and allow pre-tensioned bands to be hooked in place, both on roller and inverted roller systems. By positioning multiple hooks in sequence along the barrel, you can:

• Adjust the level of band pre-tension
• Split and distribute the lower loading load
• Make upper band loading easier
• Quickly manage the speargun power according to fishing conditions

The line guide ensures an optimal, friction-free path for the line, preventing snags during the shot and maintaining the accuracy of the propulsion system.

Compatibility

The kit is compatible with wood, aluminum, and carbon railguns equipped with roller or inverter systems. The hooks fasten directly to the barrel using the supplied stainless steel screws, with no need for complex structural modifications.

Materials

• Hooks and line guide in stainless steel — maximum resistance to saltwater corrosion
• Mounting screws included in stainless steel
• Precision machining for a safe and stable installation

Installation notes

1. Position the hook at the desired point on the speargun barrel.
2. Drill the barrel at the selected mounting point.
3. Fasten the hook using the supplied stainless steel screw.
4. Repeat the procedure for the second hook in the optimal position.
5. Install the line guide in the correct position to guide the line without friction.

Salvimar Race Kit for Predathor Spearguns

The Race Kit by Salvimar is specifically designed to optimize the technical characteristics of Salvimar Predathor spearguns used for spearfishing. This kit improves the speargun’s accuracy and responsiveness during the shot release.

Race Kit Components

• Latest-generation lightweight piston: designed to reduce moving mass, increasing shot speed and improving swing fluidity.
• Sensitive Trigger: provides precise, controlled travel, increasing control over weapon release and safety during use in the water.
• Acid Green line release with safety: designed to enable quick, reliable line release, with a safety system that ensures maximum safety throughout your underwater activity.

The Race Kit is a technical solution for those looking to fine-tune the mechanics of their Salvimar Predathor speargun, with components that improve reliability and the quality of your spearfishing session. The choice of materials and design focuses on lightness, efficiency, and practicality in the underwater environment.

Stainless Steel Spare Part Rivet Kit for Floppers

Kit of peened rivets in stainless steel, specifically designed as a spare part for floppers used in freediving and spearfishing. The choice of material ensures corrosion resistance and long-lasting durability even in marine environments.

The kits are available in three distinct sizes to fit both single flopper and double flopper configurations, making proper maintenance and component replacement easier.

Kit Contents

• 3 peened rivets in different sizes: narrow, wide and XL
• Size 1: designed for double-flopper configurations
• Size 2: specific for single flopper

These rivets ensure a perfect hold of the floppers while maintaining functionality and reliability during freediving dives or spearfishing sessions.

Pathos Roller Speargun Kit for spearfishing spearguns

The Pathos Roller Speargun Kit includes the open roller muzzle and a floating stabilizer designed to optimize spearfishing spearguns with a tubular barrel with an internal diameter of 26 mm.

Technical features of the roller muzzle

• Compatible with spearguns with Ø 26 mm tubular barrels
• Hole for routing the circular band, ensuring stable and even tension
• Front extension to support the lower flopper of the shaft, improving the stability of the retaining ring
• Allows both bands to be loaded simultaneously without interference, making speargun setup easier

Functions of the floating stabilizer

• Improves the speargun’s balance in the water, increasing ease of tracking and aiming
• Reduces recoil after the shot, helping improve shot accuracy
• Equipped with three attachment points spaced every 13 centimeters, making band loading easier and allowing a customized setup

Benefits of the Pathos Roller Speargun Kit

This kit is a technical solution for converting a band speargun into a Roller Speargun, optimizing the shooting mechanics and improving in-water control during spearfishing. More efficient band use and improved speargun balance support smoother handling and more precise spearfishing shots.

Salvimar Line Slide and Washer Kit in 17-4PH MIM Stainless Steel

The kit includes a line slide and washer made from 17-4PH MIM stainless steel, a material known for its high mechanical strength and durability in marine environments. This alloy is specifically selected to provide reliability and corrosion protection during underwater use.

The kit design is optimized to ensure smooth, precise sliding on spearguns, improving adjustment and functionality during spearfishing.

Technical Features

• Material: 17-4PH MIM stainless steel for strength and long service life
• Function: line slide and washer for spearguns
• Compatibility: suitable for spearguns used in freediving and spearfishing
• Available diameters: 7.0 mm, 7.5 mm, 8.0 mm

Availability in different sizes allows a targeted choice based on the type of speargun and the required setup, ensuring maximum control and reliability during the dive.

Weight Segment Kit for C4 Dyno and D&D Neck Weights

The Segment Kit consists of 4 additional weights for customizing the load on C4 neck weights, specifically designed for the Dyno and D&D models. The total kit weight is 1.4 kg, allowing buoyancy to be easily adjusted according to the needs of spearfishing and freediving.

Technical Features

• 500 g, 380 g, 280 g, and 210 g segments, for a total of 1.4 kg
• Fastening materials: pins and screws in stainless steel, ensuring corrosion resistance in marine environments
• Compatibility: suitable for Dyno and D&D C4 neck weights
• Color: White, for a discreet integration with freediving and spearfishing gear

Functions and Benefits

This kit allows precise weight adjustment on the neck weight, essential for achieving optimal trim during freediving descents. The ability to combine the individual segments provides accurate control over weight distribution, improving comfort and efficiency in underwater movement.

The stainless steel components ensure secure, long-lasting attachment even with frequent use in saltwater, while the modular design makes the segments easy to install and remove.

Weight Segment Kit for C4 Dyno and D&D Neck Weights

This 1.4 kg segment kit is designed to allow weight customization for C4 neck weights used in freediving and spearfishing, ensuring precise, adjustable buoyancy trim according to different underwater needs.

Kit Contents

• 4 separate weight segments: 500 g, 380 g, 280 g, and 210 g
• Compatible with Dyno and D&D C4 models
• Complete with stainless steel rods and screws for secure, corrosion-resistant fastening
• Black color for a discreet profile that integrates cleanly with your gear

Technical Features and Benefits

By allowing the weight segments to be combined, the kit makes it possible to precisely adjust the load on the neck weight, optimizing underwater trim. The use of materials such as stainless steel ensures mechanical strength and durability even in marine environments.

The screw-and-rod assembly provides stable, reliable fastening, preventing unwanted movement during freediving or spearfishing sessions.

Pathos Sniper Roller Speargun Kit for Roller Spearguns with Oval Barrel

The Pathos Sniper Roller Speargun kit includes the Sniper Roller Speargun muzzle specifically designed for spearguns with an oval-section Barrel and a Float stabilizer engineered to improve balance and recoil management.

Features of the Sniper Roller Speargun Muzzle

• Open roller muzzle designed for spearguns with an oval-shaped Barrel
• Dedicated hole for routing the circular band
• Front extension designed to support the lower barb of the shaft
• Compatible with use of the retaining ring
• Allows simultaneous loading of both bands without interference

Functions of the Float Stabilizer

• Improves the overall balance of the speargun in the water
• Reduces recoil after the shot, increasing accuracy when tracking
• Makes band loading easier thanks to three loading points spaced every 13 centimeters

This kit allows you to convert the Pathos Sniper speargun from a traditional band speargun to a roller, optimizing band management and stability during spearfishing and freediving use.

Pin Kit for Hunt Pneumatic Spearguns

The Pin Kit is designed for quick and easy installation on pneumatic spearguns without compressed air, with the goal of increasing trigger sensitivity for a better shooting experience in freediving and spearfishing.

Technical Features

• Made entirely from AISI 316 stainless steel to ensure high mechanical strength and durability in marine environments
• Polished and rounded pin that ensures top-level sensitivity, improving precision when activating the trigger
• Increases trigger smoothness and reduces release weight without shortening trigger travel, maintaining optimal safety standards
• German-made EPDM O-rings ensure a perfect seal and long service life

Compatibility and Usage Recommendations

The kit is specifically intended for Hunt pneumatic spearguns and is recommended for pairing with the Hunt polished sear to achieve a higher level of shot smoothness and a more precise, reliable trigger action.

Benefits for Freedivers and Spearfishers

This technical modification improves pneumatic speargun control during trigger release, providing a smoother, more precise release—an essential factor for increasing effectiveness and safety in spearfishing and freediving.

Plug and Pre-Tensioning Hook Kit for Roller Systems

This kit consists of a plug designed to be inserted inside speargun barrels with a standard 26.0 mm internal diameter, and a pre-tensioning hook specifically for roller systems.

The plug is inserted into the speargun barrel to the desired position, allowing you to drill a hole at the exact point where the pre-tensioning hook is secured using the screw included in the kit. This configuration ensures precise and stable installation, essential for maintaining the correct band tension in roller systems.

Technical Features:

• Compatible with tubes/spearguns with a 26.0 mm internal diameter
• Includes fixing screw for a secure connection
• Hook optimized for roller pre-tensioning systems

This kit ensures precise installation of the pre-tensioning system, helping manage band tension efficiently and provide optimal control during spearfishing or freediving.

Muzzle 610 with Bearing Pulleys - Sigalsub

The Sigalsub Muzzle 610 with bearing pulleys is the benchmark Roller Speargun solution for anyone looking to convert or upgrade their tube speargun with a high-performance system. Part of the renowned Sigalsub Roller Speargun Line, this muzzle is designed to ensure maximum line glide, increased shooting power, and long-lasting durability, even in the most demanding spearfishing conditions.

High-Glide Bearing Technology

The standout feature of this muzzle is its pulley system with dual radial bearings made from non-metallic technical material, with 316 stainless steel balls. The bearings feature an external cover that prevents sand, seaweed, and debris from entering between the balls, ensuring consistently perfect, friction-free rolling. The dynamic load rating of over 45 kg guarantees reliability and strength even with high-tension bands.

Construction and Materials

• Central body made of glass fiber-reinforced plastic material for high mechanical strength
• Stainless steel stopper for maximum robustness and resistance to marine corrosion
• Integrated dual watertight O-Ring for perfect barrel sealing
• Pulleys with dual radial bearings and 316 stainless steel balls with dynamic load >45 kg
• Available in black and military green

Compatibility and Installation

The Muzzle 610 is designed for direct fitting onto any commercial female tubular-section barrel. It fits barrels with an internal diameter of 26 mm (compatible with Seac, Pathos, Salvi, Cressi, and others) and is also available with a 25.4 mm adapter for Seatec, Omer, and similar barrels. The fastening system is quick and simple using a self-tapping screw.

• Compatible with barrels with Ø 26 mm internal diameter (standard)
• Ø 25.4 mm adapter available separately
• Bilateral side line routing: can be used on either the right or left side
• Fastening with included self-tapping screw
• Compatible with bands up to 16 mm in diameter

Complete Kit Included

The muzzle comes complete with everything needed for installation and immediate setup on your speargun:

• Complete roller muzzle with bearing pulleys
• Two burnished stainless steel hooks for band pretensioning
• Burnished line guide
• Mounting hardware
• Instruction sheet with step-by-step assembly instructions

Benefits of the Roller Speargun System

The roller system allows you to use the full working length of the barrel for band propulsion, unlike a classic traditional speargun, which uses only part of it. The result is greater shooting power for the same speargun length, or the ability to use a shorter barrel while maintaining the same ballistic performance. The Muzzle 610 is the ideal choice for anyone looking for a reliable Made in Italy component designed specifically for the needs of professional and recreational spearfishing.

Muzzle 610 Roller Speargun - Sigalsub

The Sigalsub 610 Roller Speargun Muzzle is a high-performance component for band spearguns for spearfishing, designed to convert a classic band speargun into an efficient roller system. Thanks to its roller-block technology, it delivers greater shooting power, longer range, and reduced recoil with the same barrel length.

Roller Speargun technology: more power, less recoil

The roller system uses a longer band stretch than a traditional setup, generating significantly higher speed and kinetic energy. The result is a more stable shot, with drastically reduced recoil and a more precise sight line even with high-tension bands. Ideal for challenging fish and long-range shots.

Technical features

• High-sliding roller blocks for maximum band travel smoothness
• Stainless steel stopper shaped to allow the shaft-locking nylon line to pass through
• Central body made of glass fiber-reinforced plastic material for high mechanical strength
• Compatible with most 28 mm cylindrical barrels with an external diameter available on the market
• Included: 26 mm adapter (compatible with Seac, Pathos, Salvimar, Cressi, etc.) with a double O-ring system for watertight sealing — also available in a 25.4 mm version (Seatec, Omer, etc.)
• Side front line passage, usable on either the right or left side for maximum flexibility
• Band capacity up to 16.0 mm in diameter
• Included: stainless steel pin for securing the bands and a stainless steel hook for making the loading aid
• Available in military green and black versions

Compatibility and versatility

The Sigalsub 610 Roller Speargun Muzzle is designed to fit a wide range of commercial spearguns with tubular barrels, thanks to its interchangeable dual-adapter system. It lets you upgrade your existing band speargun to a roller system without having to purchase a new speargun, with simple, straightforward installation.

Italian build quality

Manufactured by Sigalsub, an Italian company specialized in designing high-performance spearfishing equipment, the 610 Muzzle is built for reliability, durability, and precision even during the most demanding spearfishing sessions.

Muzzle 610 with Bearing Pulleys - Sigalsub

The Sigalsub Muzzle 610 with bearing pulleys is the benchmark roller solution for anyone looking to convert or upgrade their tube speargun with a high-performance system. Part of the renowned Sigalsub Roller Speargun Line, this muzzle is designed to ensure maximum line travel, greater shot power, and long-lasting durability, even in the most demanding spearfishing conditions.

High-Smoothness Bearing Technology

The standout feature of this muzzle is its pulley system with double radial bearings made from a non-metallic technical material, with 316 stainless steel balls. The bearings are equipped with an outer cover that prevents sand, seaweed, and debris from entering between the balls, ensuring consistently perfect, friction-free rolling. The dynamic load rating of over 45 kg guarantees reliability and strength even with high-tension bands.

Construction and Materials

• Central body made from glass-fiber-reinforced plastic material for high mechanical strength
• Stainless steel stopper for maximum strength and resistance to marine corrosion
• Double integrated watertight O-ring seal for perfect barrel sealing
• Pulleys with double radial bearings and 316 stainless steel balls with dynamic load >45 kg
• Available in black and military green

Compatibility and Installation

The Muzzle 610 is designed for direct installation on any commercial female tubular-section barrel. It fits barrels with an internal diameter of 26 mm (compatible with Seac, Pathos, Salvi, Cressi, and others) and is also available with a 25.4 mm adapter for Seatec, Omer, and similar barrels. The fastening system is quick and simple using a self-tapping screw.

• Compatible with barrels with Ø 26 mm internal diameter (standard)
• Ø 25.4 mm adapter available separately
• Bilateral side line passage: can be used on either the right or left side
• Fastening with included self-tapping screw
• Compatible with bands up to 16 mm in diameter

Complete Kit Included

The muzzle comes complete with everything needed for installation and immediate setup on your speargun:

• Complete roller speargun muzzle with bearing pulleys
• Two burnished stainless steel hooks for band pre-tensioning
• Burnished line guide
• Mounting hardware
• Instruction sheet with step-by-step installation instructions

Advantages of the Roller Speargun System

The roller system allows you to use the full working length of the barrel for band propulsion, unlike a classic traditional speargun, which uses only part of it. The result is greater shot power for the same speargun length, or the option to use a shorter barrel while maintaining the same ballistic effectiveness. The Muzzle 610 is the ideal choice for anyone looking for a reliable Made in Italy component designed specifically for the needs of professional and recreational spearfishing.

Muzzle 610 Roller Speargun - Sigalsub

The Sigalsub 610 Roller Speargun Muzzle is a high-performance component for band spearguns for spearfishing, designed to convert a classic band speargun into an efficient Roller Speargun system. Thanks to its roller block technology, it delivers greater shot power, increased range, and reduced recoil for the same barrel length.

Roller Speargun technology: more power, less recoil

The roller system uses a longer band stretch than a traditional setup, generating significantly higher speed and kinetic energy. The result is a more stable shot, with drastically reduced recoil and a sight line that is maintained more accurately even with high-tension bands. Ideal for challenging fish and long-range shots.

Technical features

• High-sliding roller blocks for maximum band travel smoothness
• Stainless steel stopper shaped for the shaft-locking nylon line passage
• Central body made of glass-fiber-reinforced plastic material for high mechanical strength
• Compatible with most 28 mm cylindrical barrels with external diameter available on the market
• Included: 26 mm adapter (compatible with Seac, Pathos, Salvimar, Cressi, etc.) with a double gasket system for a watertight seal — also available in a 25.4 mm version (Seatec, Omer, etc.)
• Side front line guide, usable on both the right and left side for maximum flexibility
• Band capacity up to 16.0 mm diameter
• Included: stainless steel pin for securing the bands and stainless steel hook for building the loading aid
• Available in military green and black versions

Compatibility and versatility

The Sigalsub 610 Roller Speargun Muzzle is designed to fit a wide range of commercial spearguns with tubular barrels, thanks to its interchangeable dual-adapter system. It allows you to upgrade your existing band speargun to a roller system without having to buy a new speargun, with simple, straightforward installation.

Italian build quality

Produced by Sigalsub, an Italian company specialized in designing high-performance spearfishing equipment, the 610 Muzzle is built for reliability, durability, and precision even during the most demanding spearfishing sessions.

HT Inverter Muzzle Kit - Sigalsub

The Sigalsub HT Inverter Muzzle Kit is a highly engineered component designed for spearfishing with Inverter speargun systems. The result of two years of research by the Piedmont-based company, this muzzle is one of the most technologically advanced solutions available on the market today. The kit includes the complete HT muzzle and the pre-tensioning pegs, everything needed to set up or upgrade your speargun to a high-performance Inverter system.

Materials and Construction

The muzzle is made from glass-fiber-reinforced nylon, with a calibrated fiber content to ensure the right balance between structural stiffness and surface smoothness, essential for proper band and line travel. The upper sections and the areas around the line passage holes are reinforced to provide exceptional resistance to mechanical stress generated by high-power Inverter systems.

• Muzzle body in glass-fiber-reinforced nylon – stiff, lightweight, and resistant to marine corrosion
• 8 mm diameter central steel axle for maximum transverse rigidity
• POM rollers (polyoxymethylene / acetal) – high-stiffness technopolymer with low friction and excellent dimensional stability
• Central POM axle designed with +0.5 mm compared to the rollers, to ensure free, frictionless rotation
• Pre-tensioning pin included, to be installed in place of the pin that secures the barrel and handle
• Pre-tensioning pegs included – with a radiused base that perfectly matches the barrel profile

Inverter System and Operation

The Sigalsub HT Inverter system uses two or three pairs of bands attached to blocks/pulleys connected to the tensioning line anchored to the muzzle. One pair of bands provides line pre-tensioning, attaching laterally to the barrel via the pegs included in the kit; the following pairs are loaded in sequence.

• Powerful, clean, and accurate shot thanks to the mechanical advantage of the Inverter system
• Recoil reduced to a minimum compared to traditional systems
• Controlled loading effort despite the high power output
• Pre-tensioning system that stabilizes the line before the shot

Weight and Performance

One of the most distinctive aspects of this muzzle is its extremely low weight: only 59 grams, an exceptional figure for a component in this category. This advantage translates into optimal speargun balance, reducing arm fatigue during long hunting sessions and improving directional control even in rough sea conditions.

• Weight: 59 grams – among the lightest Inverter muzzles available on the market
• Compact shape for maximum hydrodynamics
• Excellent tracking and control even with multiple pairs of bands installed
• Made in Italy design – engineered and manufactured in Sigalsub workshops

Compatibility and Use

The HT Muzzle Kit is ideal for ambush hunting, drop hunting for large groupers, and all techniques that require power and precision. It is compatible with Sigalsub spearguns from the Nemesis HT line and with other spearguns equipped with an Inverter system. The pre-tensioning pin is installed in place of the original pin that secures the barrel and handle.

• Compatible with Sigalsub Nemesis HT spearguns
• Suitable for systems with 2 or 3 pairs of Inverter bands
• Ideal for ambush hunting and drop hunting on large groupers and pelagic fish
• Guided installation – the pin replaces the barrel/handle retaining pin

Invert Wood 37 Muzzle Kit for Inverted-Propulsion Wooden Spearguns

Invert Wood 37 is a muzzle kit designed specifically for wooden spearguns with an inverted propulsion system and integrated stopper, suitable for models such as Demoltiplicati, Vela, Volcan, Invert Roller Speargun, and similar designs.

Construction and Materials

The kit frame is made of laser-cut stainless steel, reducing size and weight—key factors for improving the trim and tracking of the speargun while freediving.

The Invert 37 pulleys mounted on the frame are machined from Derlin and solid-turned PVC, materials selected to ensure maximum strength and long-lasting durability under the stresses of spearfishing.

Installation and Compatibility

The Invert Wood 37 muzzle kit is installed using the pulley through-shaft and the rear locking pin, both essential components for ensuring a stable and secure fit.

The kit is optimized for inverted-propulsion wooden spearguns, enhancing the functionality and precision typical of this type of spearfishing gun.

RG Roller Speargun Muzzle Kit - Sigalsub

The Sigalsub RG Muzzle Kit is the ideal solution for converting your commercial band speargun into a roller speargun, delivering superior performance without having to purchase a new speargun. Thanks to the roller system, the bands travel a longer stroke than traditional rubbers, allowing for more powerful, faster, and more accurate shots with the same barrel length.

Designed and manufactured by Sigalsub, a leading company from Piedmont in the spearfishing sector, the RG muzzle combines extreme lightness, high-strength technical materials, and proven mechanics to deliver professional roller speargun performance.

Roller Speargun System: more power, less bulk

The roller speargun system allows the bands to develop a significantly longer stroke than a classic traditional band speargun. The result is a more energetic shot, with less recoil and greater accuracy on target, all while maintaining the same barrel length. A real advantage for spearfishing in low-visibility environments or when longer shooting distances are required.

Technical specifications

• Band compatibility: accommodates bands up to 16.0 mm in diameter
• Weight: only 78 grams
• Rollers: made of POM (polyacetal), a self-lubricating material with exceptional wear resistance
• Roller axle: made of stainless steel, with a tolerance of 0.5 millimeters for maximum smoothness
• Muzzle surface: smoothed to facilitate line sliding
• Pretensioning mushroom hooks: made of Derlin, a high-strength technical material, available in right- and left-hand versions

Kit contents and installation

The RG Muzzle Kit includes the roller speargun muzzle and the Derlin pretensioning mushrooms. The anchoring pin is supplied as standard and is inserted in place of the pin that secures the barrel and handle, providing the attachment point for the bands during pretensioning. The system requires the bands to be first attached to the preload mushroom—with a radiused base that perfectly matches the barrel profile—and then connected to the front anchoring point in front of the handle.

Materials and durability

• Self-lubricating POM rollers: high wear resistance, zero maintenance
• Stainless steel axle: corrosion-resistant, consistent performance in salt water
• Derlin mushrooms: tough, lightweight thermoplastic technical material
• Extremely low overall weight: 78 grams for minimal impact on the speargun’s trim

Who it’s for

The Sigalsub RG Muzzle is designed for spearfishers who want to increase the performance of their existing band speargun by switching to a roller system, without the cost of a new speargun. Ideal for those looking for greater shot power, reduced recoil, and maximum reliability in Mediterranean waters and beyond.

Double Roller Speargun Muzzle Kit Power Head - Ceramic

The double Roller Speargun conversion kit in the Premium version is designed for installation on spearguns, ensuring a reliable, precise, and powerful system.

Main Technical Features

• Ceramic bearings with high smoothness (8 total, 2 per pulley), offered with a lifetime warranty for smoother rotation and improved corrosion resistance.
• High-performance Bands with a 1 mm diameter bore, optimized to transfer power directly to the shaft with minimal energy loss.
• Wraparound side plates made from 2 mm thick carbon fiber, effectively protecting pulleys and bearings from impacts and wear without increasing overall weight.

Design and Functionality

The in-line pulley layout features a slim, lightweight profile, reducing bulk and hydrodynamic drag compared to traditional systems with side-by-side or staggered pulleys.

The difference in diameter between the front pulley (larger) and rear pulley (smaller) prevents the Bands from overlapping, improving thrust transmission efficiency and smoothness of movement.

Kit Components

• Durable stamped-steel Muzzle body
• Four pulleys with ceramic bearings
• Ultra-light carbon fiber side plates
• Integrated line guide to facilitate shock absorber attachment or use with lines up to 3.2 mm thick
• Three types of Dyneema line for different configurations
• Adjustable barrel adapter from 24.5 to 26.5 mm
• Bands with 14 mm or 15 mm small bore
• Rocker wishbone and detailed assembly instructions with explanatory images

Applications and Compatibility

The Muzzle is designed for spearfishing large pelagics and bottom fish that require high power and extended range. It is compatible with any European or South African speargun equipped with a removable cylindrical Muzzle, offering a simple, immediate solution for conversion to double Roller Speargun.

The integrated double line guide allows the shooting line to be configured on either the right or left side, increasing operational versatility.

Performance

The Mannysub double Roller Speargun system, using pairs of 14 or 15 mm small-bore Bands, can launch shafts up to 8.5 mm in diameter at high speed, while keeping recoil low and making accurate tracking easier.

This configuration is particularly suited to spearfishers who need powerful, reliable tools optimized for spearfishing in marine environments.

Double Roller Power Head Muzzle Kit - Glass

The Double Roller Power Head - Glass conversion kit, made in Australia, is designed for those looking for a precise and functional double Roller Speargun Muzzle for freediving and spearfishing spearguns.

Design and Construction

The Muzzle features an innovative system with inline pulleys, characterized by different diameters: the front pulley is larger than the rear one. This solution prevents the Bands from overlapping and allows for compact wraparound along the speargun barrel, reducing bulk and hydrodynamic drag. The result is smoother, more controlled tracking during the shot phase.

Technical Components

• Robust main body, molded construction
• 4 pulleys with glass bearings for optimal smoothness
• Ultra-light carbon fiber side plates to reduce overall weight
• Integrated line guide, suitable for lines up to 3.2 mm thick
• Three types of Dyneema line included in the kit
• Barrel adapter available for diameters from 24.5 to 26.5 mm
• Bands available in 14 and 16 mm diameters
• Rocker linkage and detailed instructions for simple, correct assembly

Functionality

The integrated anchor point allows attachment of the Muzzle bungee. The dual line guide allows the shaft to be secured to the Muzzle, with the shooting line positionable on either the right or left side, offering greater flexibility in setups.

Configurations and Compatibility

• 2 pairs of 14 mm Bands to drive 8.0 mm shafts at high speed
• 2 pairs of 16 mm Bands for 8.5 mm shafts on 100 to 140 cm spearguns, delivering high speed and power
• Supports the use of lightweight 7.5 mm shafts with reduced pretensioning and 14 mm Bands

These options allow the kit to be adapted to the specific needs of the freediver or spearfisher, optimizing speargun thrust and accuracy.

Technical Advantages

• Minimized bulk thanks to the compact design of the inline pulleys
• Extremely low friction between the Bands, increasing propulsion efficiency
• Lightweight construction ensured by carbon fiber and the fiberglass body
• High mechanical strength and component durability
• Easy assembly and maintenance ensured by the illustrated instructions

Single Roller Power Head Muzzle Kit - Ceramic

The Premium roller conversion kit Single Roller Power Head - Ceramic, made in Australia, is designed for installation on spearguns with a removable cylindrical muzzle. This system significantly improves power and accuracy in spearfishing, delivering greater penetration and range with superior control.

Main Technical Features

• High-speed ceramic bearings: four bearings (two per pulley) made from ceramic material with encapsulated balls, designed to reduce friction and increase power-transfer efficiency. Resistant to sand and saltwater, virtually maintenance-free. They are covered by a lifetime warranty.
• High-performance small-ID bands: 15, 16, or 18 mm bands with a 1 mm inner-diameter hole, offering high elastic performance to optimize pretension and maximize shaft thrust.
• Wraparound carbon fiber side plates: 2 mm thick, ultra-lightweight and strong, fully protecting the pulleys and bearings from impacts while improving the kit’s mechanical strength without adding weight.
• Molded one-piece body: solid and lightweight structure, designed for superior durability and balanced trim when swinging the speargun.
• Integrated line guide: allows the muzzle shock absorber to be secured and accommodates lines up to 2.5 mm thick, for versatile and safe installation.
• Complete with three types of Dyneema line: to choose the most effective setup based on your spearfishing needs.
• Rocker tie and barrel adapter: available for diameters from 24.5 to 26.5 mm, for compatibility with various speargun models.

Technical and Functional Benefits

The Roller Speargun system eliminates the recoil typical of traditional muzzles and uses 100% of the barrel length to propel the shaft, increasing power without increasing the freediver’s effort. By optimizing the ratio between band stretch and shaft weight, the kit generates more effective thrust, improving accuracy, shaft penetration, and handling of the speargun while freediving.

The lightness of carbon fiber and the low mechanical resistance of the ceramic bearings contribute to superior smoothness and responsiveness when shooting. Its simple construction makes assembly easy and ensures long-lasting reliability over time.

Compatibility and Usage Tips

• The kit is recommended for spearguns from 70 to 110 cm in length, but it can also be used effectively on 120 to 130 cm spearguns by installing 16 or 18 mm bands.
• Compatible with most Euro and South African spearguns with a removable cylindrical muzzle.
• Assembly instructions included to ensure correct and safe installation.

Single Roller Power Head - Glass Muzzle Kit for Spearguns

The Single Roller Power Head - Glass Roller Speargun conversion kit, made in Australia, is designed to improve the power and accuracy of spearguns for spearfishing and freediving. This system eliminates traditional recoil by optimizing the use of barrel length for more effective and controlled power transfer.

Technical Features

• One-piece main body made from robust molded material for high mechanical strength
• Two pulleys with glass bearings with low friction, made from acetal with encapsulated glass balls to withstand sand and salt water, reducing maintenance and ensuring long-term durability
• Ultra-light side plates in carbon fiber to ensure lightness without compromising strength
• Integrated line guide allowing the attachment of shock absorbers or lines up to 2.5 mm thick
• Complete with three types of dyneema line, barrel adapter, and rocker link
• Available with 14, 16, and 18 mm bands and adapters from 24.5 to 26.5 mm, to fit different speargun sizes

Benefits for spearfishing and freediving

The roller system allows 100% of the barrel length to be used to drive the shaft, increasing generated power thanks to the pretensioned bands and an optimized ratio between band stretch and shaft weight. This configuration improves the accuracy, penetration, range, and handling of the speargun. The use of lightweight yet durable materials also contributes to smooth movement and better trim in the water.

Compatibility and Use

• Compatible with most Euro-style or South African-style spearguns equipped with a removable cylindrical muzzle
• Recommended for spearguns between 70 and 110 cm in length
• Also high-performing on 120 to 130 cm spearguns when equipped with 18 mm bands

Installation and Maintenance

The kit includes detailed, easy-to-follow assembly instructions, allowing for a quick and efficient conversion. The low-maintenance bearings reduce wear and ensure reliable use even in saltwater environments.

Kit for X-Shaft Free Shafts – X-Power 1.0

The Kit for X-Shaft Free Shafts – X-Power 1.0 is a threaded bushing made from acetal resin, specifically designed to ensure the vacuum watertight seal of the muzzle when paired with the Kit Fucile – X Power 1.0.

The kit includes:

• One threaded bushing with washer seat and shaft pass-through hole
• Two sealing gaskets to ensure watertightness
• One slide ring complete with stoppers for proper shaft positioning

The technical features of the bushing include a dedicated front seat for the washer and an optimized hole for shaft passage, ensuring rigidity and stability during the shooting phase in spearfishing.

Quick and easy installation

The end-piece assembly and disassembly operations can be performed without tools, thanks to a threaded system that allows the bushing to be screwed and unscrewed directly from the muzzle quickly, improving convenience during maintenance and speargun preparation.

Compatibility

The kit is available for shafts with a diameter of 6.5 mm and 6.75 mm, allowing you to choose the solution best suited to your precision and power requirements in spearfishing.

Sigalsub Tsunami Foot Pockets Mounting Kit

The Sigalsub Tsunami foot pockets mounting kit is designed to attach the blade to the foot pocket in a stable, practical, and secure way.

The system uses a single Allen screw for quick assembly and precise coupling between the blade and foot pocket.

The threaded nut is integrated into a plastic plate engineered to ensure a strong, long-lasting hold, keeping the connection stable even during intensive freediving and spearfishing use.

The kit is compatible with the connection system of Sigalsub Tsunami foot pockets equipped with short rails.

Replacement screw kit for 350 H.Dessault foot pockets

This kit includes all the components needed to install and replace the 350 H.Dessault foot pockets, essential for maintaining the optimal fit and functionality of your freediving equipment.

• 2 plastic inserts
• 2 stainless steel self-tapping screws
• 2 plastic washers

The stainless steel material provides corrosion resistance in marine environments, ensuring long-lasting durability and reliability. The plastic washers and inserts help provide a stable, secure fastening, preventing loosening caused by vibrations or movement in the water.

The black kit is designed to integrate perfectly with the 350 H.Dessault foot pockets, preserving their trim and functionality during freediving or spearfishing.

Water Rails Kit for Carbon or Composite Blades

The Water Rails kit is made of rubber and specifically designed for installation on carbon or composite blades used in freediving and spearfishing. This replacement kit is compatible with C4 blades and other brands, providing a simple and functional upgrade.

Technical features

• Height: 10.0 mm
• Length: 1 meter
• Constant-type side profiles
• Material: rubber suitable for mechanical strength in underwater environments

Application

The side profiles are attached to the blade by bonding with cyanoacrylate glue, ensuring a stable and long-lasting hold. This type of installation helps optimize the blade’s hydrodynamics, improving finning smoothness and responsiveness when moving through the water.

Mares Safety Lanyard for Freediving

The Mares safety lanyard is an essential accessory for freedivers, designed to provide reliable support during training and competition. Made from yellow coated steel cable, its construction ensures mechanical strength and long-lasting durability in underwater environments.

Technical Features

• Length: 100 cm, an optimal size to ensure safety without getting in the way in the water
• Material: coated steel cable for corrosion protection
• Color: high-visibility yellow for easy identification
• Included: quick-release system on wrist strap, with stainless steel carabiner and swivels at the ends

How to Use

The lanyard is worn according to the type of dive and the freediver’s setup:

1. Constant weight Freediving: it is preferably worn on the wrist. If no weight belt is used, it can also be worn on the belt.
2. Free immersion Freediving: it is worn on the ankle to ensure freedom of movement and safety during the descent.

Applications

The lanyard is mandatory in constant weight freediving competitions, where it ensures proper control of the descent and ascent along the guide line. It is also strongly recommended during training courses and practice sessions, representing a key element for freediver safety.

Spare Part Line Release Rob Allen

The replacement line release Rob Allen is made from durable plastic, specifically designed for use in freediving and spearfishing.

This component allows quick release of the line, ensuring practicality and safety during breath-hold dives.

The choice of plastic materials ensures light weight and corrosion resistance in marine environments, preserving long-term reliability during underwater use.

Rob Allen Stainless Steel Line Release

Specific Spare Part for spearfishing and freediving, the Rob Allen line release is made from stainless steel, ensuring high corrosion resistance and long-lasting durability even in saltwater environments.

This component is designed for fast, secure line management during spearfishing sessions, ensuring reliability and ease of use underwater.