Abstract: A quick disconnect system for muzzle devices having a receiver and a clutch assembly. The receiver has a central bore, outer bearing surface, threaded region, tapered shoulder, collar and a plurality of receiver teeth. The receiver teeth are situated around an inner perimeter of a rear-most edge of a third section of the central bore of the receiver. The clutch assembly includes a locking lug mount, clutch ring, spring, and retainer ring. The locking lug mount has a central bore with a non-threaded portion and a threaded portion. A plurality of locking lugs are situated around an outside perimeter of a central portion of the locking lug mount, and each of the locking lugs is configured to fit between two adjacent receiver teeth. The spring is situated between the clutch ring and the retainer ring.

Abstract: A quick disconnect system for muzzle devices haying a receiver and a clutch assembly. The receiver has a central bore, outer bearing surface, threaded region, tapered shoulder, collar and a plurality of receiver teeth. The receiver teeth are situated around an inner perimeter of a rear-most edge of a third section of the central bore of the receiver. The clutch assembly includes a locking lug mount, clutch ring, spring, and retainer ring. The locking lug mount has a central bore with a non-threaded portion and a threaded portion. A plurality of locking lugs are situated around an outside perimeter of a central portion of the locking lug mount, and each of the locking lugs is configured to fit between two adjacent receiver teeth. The spring is situated between the clutch ring and the retainer ring.

Abstract: A fixture plate for use with a CNC milling machine. The fixture plate is constructed of a generally rectangular block having a top surface, a bottom surface and a forward edge. The bottom surface of the block is positioned to rest on the support surface with the forward edge of the block resting against the fixed jaw. The bottom surface of the block includes a cavity in which is mounted a clamping pin for coupling with the vise hook nut. When the machine screw is manipulated to move the mounting block toward the fixed jaw, the block is clamped to the vise between the fixed jaw and the vise hook nut. The top surface of the block is provided with grooves shaped to conform to the peripheral shape of each of the multiple workpieces. Clamping nuts, recessed in the grooves, are used for clamping the multiple workpieces to the block.