Barett 50Cal BMG Patent
This is the complete patent for the Barett 50Cal BMG. It includes all drawings, and assembly literature.
From The Abstract:
A repeating firearm includes a bolt carrier and bolt assembly which are movable relative to each other to provide for locking and unlocking the bolt with respect to the barrel breech. An elongated bearing plate is supported by the bolt and movable with the bolt to maintain a cartridge to be next inserted into the barrel chamber in a predetermined position until the bolt is substantially fully retracted to prevent premature movement of the cartridge upon movement of the bolt carrier only. The bolt carrier and bolt assembly are interconnected by a cam mechanism including a helical cam slot, fanned in the bolt carrier and a cylindrical pin type cam follower engageably with the bolt. The bolt, cam follower and an elongated firing pin are maintained in assembly with the bolt carrier by a firing pin retainer which is locked in a pin retaining position by a movable member which permits movement of the firing pin retainer at will to release the firing pin for removal from the bolt assembly without complete removal of the pin retainer from the bolt carrier. A bolt lockout pin includes an actuating lever mounted on a support plug which may be reversibly mounted on the stock section for interchanging the lever from one side of the stock section to the other.