ENARM Pentagun
The Pentagun is a five-round shotgun manufactured by the Brazilian firm ENARM. It has a revolver-type cylinder and could be fired double action only.
Gas blow-by between cylinder and barrel was prevented by means of movable barrel, which was pulled just prior to firing 1.5mm backwards into the corresponding recesses in cylinder. The shotgun utilizes a straight-line configuration in order to minimize muzzle rise when firing.
