Rob Allen Black Carbon Speargun

Overview

The Rob Allen Black Carbon Speargun is a band-powered carbon railgun for spearfishing and bluewater applications. Its pullwound carbon barrel incorporates the shaft rail into the barrel structure, while the handle mechanism is designed specifically to secure to the carbon barrel.

Barrel and handle design

The integral rail forms part of the barrel structure and contributes to barrel stiffness. At the rear, an internal spigot and external shrouds grip the barrel so attachment loads are not concentrated around the mechanism mounting screw holes.

Testing and balance

Each carbon barrel undergoes two pressure checks: an air test after the pullwinding process and a hydraulic test after assembly at pressure equivalent to 40 m depth for one hour.

Models 110 cm and longer incorporate an internal muzzle-brake weight behind the muzzle. The added mass balances the front of the speargun while aiming and helps reduce muzzle lift and recoil when fired.