Abstract: A feature of this invention is the provision of a gun bolt having a firing pin which is movable to and between an aft disposition whereat the forward end of said pin is aft of the face of the gun bolt and a forward disposition whereat said forward end is forward of said face, locking means movable to and between a locked disposition whereat said gun bolt is locked to fixedly close the chamber of the gun and an unlocked disposition, and intermediate means responsive to the disposition of said locking means for locking said pin in its aft disposition when said locking means is not in its locked disposition.

Abstract: A feature of this invention is the provision of a slider coupled to the gun bolt for camming the locking lugs and for positively retaining the lugs in their bolt-locking disposition.

Abstract: This invention has the provision in an automatic gun having a relatively small diameter barrel cluster, which rotates at a first velocity, of a relatively small diameter stationary cam track which controls and drives the gun bolts through their respective fore and aft dwells and adjacent accelerations and decelerations, and an additional relatively small diameter cam track which rotates in the opposite direction at a multiple of said first velocity to control and drive the gun bolts through the cross-overs of the stationary cam track.

Abstract: This invention has the provision of a plurality of cam driven follower assemblies carried by the rotor, one for each gun bolt, for pushing a round from the feed sprocket to the gun bolt, and from the gun bolt to the exit sprocket.