Abstract: A hand-held, single-shot grenade launcher including a receiver and attached stocks for both hands, a barrel slidable in the receiver, an assembly of Belleville springs for absorbing recoil and a breech connected to the end of the barrel. A grenade round is manually inserted in a firing chamber defined by the breech and the inner end of the barrel and cammed into firing position by a sliding breech block that carries a pivotal firing lever operated by a striker mounted in the receiver. The striker is biased by a helical striker spring and is cocked by a cocking lever associated with the right hand grip. The weapon is fired by depressing the cocking lever and thus pulling the trigger to cam the striker upward and release it from a sear operated by the cocking lever. Upon release the striker impacts an arm of the firing lever to drive a firing pin carried by the other arm of the firing lever into the primer of the grenade round casing.

Abstract: A machine pistol with means for retarding blowback of the slide assembly. The device has both right hand and left hand stocks to enable the weapon to be fired from a comfortable visual sighting position at eye level with the wrist axes perpendicular to one another. The slide assembly includes a bolt that carries the firing pin, extractor and ejector and that reciprocates relative to the receiver and barrel, and a tubular cylindrical muzzle sleeve removably connected to the forward end of the bolt and that fits coaxially around the barrel. A coaxial helical spring fits between the barrel and muzzle sleeve to urge the muzzle sleeve (and bolt) to the forward firing position wherein the forward end of the muzzle sleeve extends outwardly beyond the end of the barrel.