Patent ID: 6412390
Filing Date: 2002-07-02
Classification: F41A

Abstract:
A firing adapter for adapting an existing semi-automatic or automatic gas and recoil operated weapon that includes a gas system, a receiver, a recoil mechanism, a bolt, a barrel, a feed mechanism, wherein the gas system operates the bolt and the recoil mechanism operates the feed mechanism, to fire low energy cartridges, the adapter comprising:a sub-caliber piston having an inner diameter that is smaller than an inner diameter of the barrel; a barrel sleeve having an outer diameter substantially equal to the inner diameter of the barrel, and an inner diameter slightly larger than the outer diameter of the sub-caliber piston; an anchor that secures the sub-caliber piston to the receiver; the barrel sleeve fitting within, and removably secured to the barrel; the sub-caliber piston slidably disposed relative to the barrel sleeve to provide gas pressure needed to operate the gas system and the recoil mechanism, while reducing the force transmitted through the adapter to a desired level; and wherein the anchor provides a path for reacting the force generated by the sub-caliber piston to recoil the recoiling mechanism.