Invention Grant
- Patent Title: Gas piston operated upper receiver system
- Patent Title (中): 气体活塞上部接收器系统
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Application No.: US14108872Application Date: 2013-12-17
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Publication No.: US09032860B2Publication Date: 2015-05-19
- Inventor: Robert T. Faxon
- Applicant: Faxon Firearms, LLC
- Applicant Address: US OH Cincinnati
- Assignee: FAXON FIREARMS, LLC
- Current Assignee: FAXON FIREARMS, LLC
- Current Assignee Address: US OH Cincinnati
- Agency: Wood Herron & Evans LLP
- Main IPC: F41C23/16
- IPC: F41C23/16 ; F41A3/66 ; F41A5/26 ; F41A5/28 ; F41A15/14 ; F41A5/18

Abstract:
Disclosed is an upper receiver assembly for use with an AR15-type lower receiver. The upper receiver assembly includes a monolithic upper receiver and forearm housing. A barrel has a breech end, a muzzle end, a bore axis, and a barrel trunnion at the breech end having a lug for direct connection to the lower receiver using the pivot pin. It includes a bolt carrier assembly, having a longitudinal slot and rail engagement with the upper receiver housing on which the bolt carrier assembly slidably reciprocates, and a long-stroke gas-piston actuation system. A recoil spring assembly is housed within the monolithic upper receiver and forearm housing and extends coaxially with the longitudinal axis of the gas-piston actuation assembly. The barrel trunnion and gas block are configured for engagement with the upper receiver and forearm housing with longitudinal keyway features.
Public/Granted literature
- US20140224114A1 GAS PISTON OPERATED UPPER RECEIVER SYSTEM Public/Granted day:2014-08-14
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