Rg Roller Speargun Muzzle Kit - Only the Photo Is Missing

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.