Gas-operated shotgun

Gas-sealing means for tubular magazine gas-operated firearm

General purpose automatic weapon system

Gun lock and gas operating system

High volume automatic and semi-automatic firearm

Hydraulic breech mechanism for firearms

Individual firearm with improved recock device

Low-recoil firearm with noncircular guide rod for angularly loca

M16 modified with pushrod operating system and conversion...

Mechanism for gas control in an automatic firearm

Modular lightweight squad automatic weapon system

Modular, multi-caliber weapon system

Muzzle attachment for barrel of gas-operated weapon

Piston and obturator assembly for autoloading firearms

Pressure relief mechanism for gas operated firearm

Recoil attenuator

Repeating weapon actuating spring and guide

Rifle

Rifle modification

Self-cleaning gas operating system for a firearm