Firearm receiver assembly

Register USPTO Patent
Application Number 14844886
Grant Number 09772150
Status In Force
Filing Date 2015-09-03
First Publication Date 2016-03-24
Publication Date 2016-03-24
Grant Date 2017-09-26
Owner LWRC International LLC (USA)
Inventor Gomez, Jesus S.


An upper receiver assembly for a firearm having an upper receiver with an integral barrel nut, a assembly and a barrel nut assembly with a barrel and lock nut is provided. The barrel is received by the upper receiver and is secured directly to the upper receiver using the lock nut. The upper receiver also includes an integral mounting member to which the assembly may be directly attached. The upper receiver assembly allows the user to attach both the barrel and assemblies directly to the upper receiver, independently of one another.

IPC Classes  ?

  • F41A 3/64 - Mounting of breech-blocks; Accessories for breech-blocks or breech-block mountings
  • F41A 3/66 - Breech housings or frames; Receivers
  • F41C 23/16 - Forestocks; Handgrips; Hand guards
  • F41A 5/18 - Mechanisms or systems operated by propellant charge energy for automatically opening the lock gas-operated
  • F41A 21/48 - Barrel mounting means, e.g. releasable mountings for replaceable barrels
  • F41A 21/00 - Barrels or gun tubes; Muzzle attachments; Barrel mounting means
  • F41C 23/20 - Butts; Butt plates; Mountings therefor