Accessories and Spare Parts for Spearguns

Carbon Tube - Sigalsub

The Sigalsub Carbon Tube is the original replacement barrel for 100% carbon fiber spearguns, designed and manufactured in Italy to ensure maximum performance in spearfishing. Compatible with the Nemesis speargun range and with the main Sigalsub components, this tube is the ideal choice for anyone looking to build a high-performance custom gun or replace the original barrel while maintaining the brand’s quality standards.

Construction and Materials

The barrel is made from high-modulus carbon fiber with a wall thickness of 2.0 mm, ensuring the perfect balance of light weight, structural rigidity, and pressure resistance in the marine environment. The outer surface is not screen-printed, leaving full freedom for custom personalization.

• Material: 100% high-modulus carbon fiber
• Wall thickness: 2.0 mm
• Outer diameter: Ø 30 mm
• Inner diameter: Ø 26 mm
• Outer surface: not screen-printed

Integrated Shaft Guide

The shaft guide is integrated and is structurally part of the barrel itself: it is not glued on or applied afterward. This construction solution significantly increases the barrel’s rigidity, especially in the vertical direction — the one most stressed during the shot — ensuring precise and consistent trajectories over time.

Configuration and Accessories

The tube is supplied without watertight plugs and without mounting holes for muzzle and handle, allowing it to adapt to a wide variety of rigging configurations. The black nylon fastening pins Ø 4.0 x 30 mm are included as standard and are also available separately as a replacement part.

• Watertight plugs NOT included (available separately)
• Mounting holes NOT present: the tube is blank and ready for custom rigging
• Black nylon fastening pins Ø 4.0 x 30 mm supplied as standard

Available Lengths

The Sigalsub Carbon Tube is available in a wide range of sizes, from 60 cm to 120 cm, to suit any speargun configuration, from a short gun for hole hunting to long models for distance shots.

Compatibility

The 30 mm outer diameter and 26 mm inner diameter make it compatible with the vast majority of Sigalsub handles, muzzles, and components, as well as many aftermarket components available in the spearfishing market.

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

Sigalsub Single-Band Muzzle in Glass-Filled Nylon

The Sigalsub single-band muzzle is made from glass-filled Nylon, a material valued for its mechanical strength and lightweight construction, ideal for use in spearfishing and freediving.

Equipped with a stainless steel line guide, the muzzle ensures strong retention and durability in the marine environment, while the two O-rings provide improved watertight sealing and prevent water ingress.

The fixing pin makes installation easier and ensures stable anchoring of the band.

Main technical features

• Compatible with barrels with a 26 mm diameter
• Designed to accommodate a circular band
• Lightweight and compact structure to reduce bulk and improve handling
• Color: Green

Nemesis Closed Muzzle - Sigalsub

The Sigalsub closed muzzle for Nemesis spearguns is the dedicated component for hole hunting and short, powerful shots. Designed and manufactured entirely in Italy by Sigalsub, this muzzle transforms the Nemesis speargun into the ideal configuration for tight environments, crevices, and close-range hunting with maximum efficiency.

Technical Features

• Closed Muzzle with threaded holes for parallel in-line bands
• Screw-in Bands (with bushings) for a compact, powerful setup
• Made from 30% fiberglass-reinforced nylon, the same high-strength material used for the Nemesis handle
• Compatible with threaded shafts for mounting a prong or spear tip
• Compact design, among the smallest in the spearfishing speargun category
• Quick assembly via transverse locking pin, a proven system used throughout the Nemesis line
• Watertight seal ensured by dual O-rings on the male insert
• Compatible with Nemesis aluminum barrels (6082 alloy, 28 mm outer diameter with integrated shaft guide)

Why Choose the Closed Muzzle Configuration

The closed muzzle is the optimal technical solution for hole hunting: the in-line bands with bushings deliver concentrated, direct thrust, ideal for short-range shots where immediate power is required. The closed geometry protects the bands from impacts against walls and rocks while maneuvering in confined spaces, increasing component life and operational safety.

Nemesis Versatility and Customization

One of the strengths of the entire Nemesis system is its modularity: by replacing only the muzzle, you can convert your speargun from an open circular-band configuration to a closed configuration — or vice versa — without modifying the handle, barrel, or trigger mechanism. This makes the Nemesis closed muzzle a versatile investment, allowing the same speargun to adapt to different spearfishing techniques.

Italian Sigalsub Production

Sigalsub is an Italian artisan company that combines precision machining with manual finishing and assembly, with quality control on every single component. Sigalsub’s expertise in trigger mechanisms and speargun components is recognized internationally, which is why many professional spearfishers choose Sigalsub components for building custom spearguns as well.

Shaped Spare Part Handle Insert for D'Angelo II Handle

Shaped spare insert designed specifically for the D'Angelo II Handle, compatible with Pathos Laser, Laser Open, Laser Pro, and Saragos spearguns.

This component is available in two versions, intended respectively for use with right-hand and left-hand handles, ensuring customized ergonomics based on the user's dominant hand.

Technical Features

• Compatibility: suitable exclusively for the D'Angelo II handle
• Supported models: Pathos Laser, Laser Open, Laser Pro, and Saragos
• Versions: right and left for optimal ergonomics and grip comfort
• Materials: made to ensure mechanical strength and durability in underwater environments

The insert helps maintain speargun accuracy and control during spearfishing, optimizing maneuverability and force transmission while tracking the target.

Nemesis Retaining Pins - Sigalsub

The original Sigalsub retaining pins are essential spare parts for the proper assembly and maintenance of the Nemesis speargun. Made of nylon, they ensure reliable and precise locking of the grip insert on the handle, providing operational stability during use at sea.

Function and Compatibility

The nylon retaining pin is the component that locks the grip insert onto the Nemesis handle. The assembly and disassembly system is extremely simple and quick, making replacement easy for any spearfisher, with no need for special tools. Compatible with the entire Nemesis handle line.

• Original Spare Part Sigalsub, entirely made in Italy
• Compatible with Nemesis handles mounted on aluminum and carbon fiber barrels
• Suitable for all models in the line: Nemesis Classico, Pro, Plus, HT and Carbon
• Available in two color options: Black and Military Green

Material and Features

Made of nylon, the pin is lightweight, durable, and perfectly sized for securing the Santoprene grip insert on the Nemesis handle. The simple construction of this component allows quick assembly and disassembly of the grip insert, a frequent operation when customizing or replacing it.

• Material: nylon, lightweight and durable
• Quick, tool-free grip insert assembly and disassembly
• Color matched to the Nemesis handle finish
• 100% Made in Italy production

When to Replace the Retaining Pin

It is recommended to check and replace the retaining pin in case of:

• Visible wear or deformation of the pin
• Instability or play of the grip insert on the handle
• Routine Maintenance after seasons of intensive use
• Replacement or color change of the grip insert

Technical Specifications

• Type: through-pin for grip insert retention
• Material: nylon
• Use: securing the Nemesis grip insert/handle
• Available colors: Black / Military Green
• Production: 100% Made in Italy

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 Spare Part Trigger with Spring

Original Rob Allen spare trigger designed for replacement on spearfishing and freediving spearguns. Includes the integrated spring to ensure proper operation and response of the trigger mechanism.

This component is made from durable materials, engineered to maintain the reliability and precision of the trigger during underwater use, ensuring responsiveness and safety during tracking and firing.

The Spare Part is compatible with most Rob Allen spearguns and allows for quick and simple maintenance, helping keep your spearfishing gun performing at its best.

Plug for Speargun Barrels

The plug for speargun barrels is an essential accessory for spearfishing and freediving, designed to prevent water from entering the speargun barrel during dives.

Made from strong, corrosion-resistant materials, it provides effective protection against moisture and saltwater, preserving the integrity of the loading mechanism and the speargun’s internal components.

Its simple, secure installation ensures a watertight seal, preventing leaks that could compromise the accuracy and efficiency of the speargun.

Vecta 2 Rob Allen Stainless Steel Release Mechanism

The Vecta 2 release mechanism, manufactured by Rob Allen, is made entirely from stainless steel to ensure high corrosion resistance and long-lasting durability in the marine environment.

This replacement component is designed to ensure reliable, precise operation during freedive spearfishing and underwater activities, allowing safe release of the line or reel.

Main features:

• Material: high-strength stainless steel, suitable for saltwater environments
• Compatibility: specifically for the Vecta 2 Rob Allen mechanism
• Functionality: quick and secure release mechanism