Self loading firearm bolt carrier with integral carrier key and angled strike face

Register USPTO Patent
Application Number 13769224
Grant Number 08783159
Status In Force
Filing Date 2013-02-15
First Publication Date 2014-01-30
Publication Date 2014-01-30
Grant Date 2014-07-22
Owner LWRC International LLC (USA)
  • Gomez, Jesus S.
  • Miller, Jason Lee
  • Schilling, Robert S.
  • Llewellyn, Michael R.


A bolt carrier for use with the AR15/M16 family of firearms is provided. The bolt carrier includes an integrally formed carrier key and spherical strike face surrounded by a cylindrical counterbore made with a downward angle to act against the tilting force imparted by the operating rod of the firearm's gas operating system. The outer surface of the carrier includes upper and lower running rails that all extend fully to the front face of the carrier to lengthen the carrier's rail support or bearing surfaces against the receiver. To improve the robust operation of the firearm in over the beach operations, the bottom and rear of the receiver extension has drain holes formed through which water is forced out of the receiver extension by the reciprocating action of the bolt carrier when the weapon is fired.

IPC Classes  ?

  • F41A 5/18 - Mechanisms or systems operated by propellant charge energy for automatically opening the lock gas-operated