Patent ID: 8479634

Claim:
A trunnion nose guard for protecting outer threads of a cylindrical nose of a trunnion of a Browning .50 caliber machine gun, the trunnion having a front face from which the nose axially extends, the front face having an outer periphery, and a spring-biased locking pin extending from the front face, the guard comprising a hollow cylinder having first and second ends, the first end having a flange having a flange face adapted to fit against the front face of the trunnion, an outer periphery which does not radially extend beyond the outer periphery of the front face of the trunnion, and a through-hole for releasably receiving the spring biased locking pin, the second end of the cylinder having internal threads adapted to cooperate with the trunnion nose outer threads to permit the guard to be threadably attached to the trunnion, and an axial length selected so that when the guard is threadably attached to the trunnion and the spring-biased locking pin is received within the hole of the guard flange, the second end does not extend substantially beyond the end of the trunnion nose.