Closed Muzzle for Nemesis Speargun

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.