Abstract: The invention consists of four components: a diverter assembly, a blocking plate assembly, a blast deflector and an exhaust duct. The diverter attaches to the gun barrel clamp and rotates and recoils with the gun; as gases leave the gun barrels and enter the diverter they are redirected by it from axial flow to radial and tangential flow, thereby imparting a forward force and a torque to the barrel cluster. The blocking plate assembly does not rotate within the diverter and acts to limit the egress gas and the gas that flows into the non-firing gun barrels. The blast deflector has a collector that surrounds the diverter and collects the diverted gases. The duct receives the collected gases and conducts them to the desired exhaust ports.

Abstract: A Gatling-type gun mechanism has a stationary housing having a camming channel and at least one loading/unloading port. A rotor is mounted inside the housing and can be rotated about a longitudinal axis; the rotor carries a plurality of gun barrels, each fixed to the rotor with a respective barrel axis substantially parallel to the rotor longitudinal axis; a like number of stud assemblies, each having a respective axis aligned with the axis of an associated gun barrel; and a like number of cartridge chambers, each interacting with the housing camming channel, during each rotation of said rotor, for reciprocal motion between a rearward location substantially coaxial about the associated stud assembly and a forward location substantially in abutment with the associated gun barrel and enclosing a volume into which a round of ammunition can be placed and removed by radial movement through the loading/unloading port.

Abstract: In a firing mechanism for Gatling-type guns, separate safing and firing cams are located at a firing position coinciding with a notch in an annular safing ring against which cocking levers ride to maintain their firing pins in pre-cocked conditions. To safe the firing mechanism, the safing cam is positioned to bridge the notch and maintain the firing pins pre-cocked as they revolve through the firing position. When the mechanism is armed, a cocking ramp surface of the firing cam is then positioned to cam the cocking levers rearwardly, cocking their firing pins. Immediately thereafter, the cocking levers drop off a firing cam sear corner into the notch now exposed by the safing cam to successively fire off ammunition rounds.

Abstract: A gun barrel is produced by vacuum plasma spray depositing an inner layer of a refractory metal as a gun barrel liner on a mandrel, followed by deposit of successive layers of dense gun barrel jacket material to build up a structure from the inside out. The outermost layer can include attachment means for fixing the barrel into a gun mechanism.

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.