The present device is a shortened recoil system designed to replace the AR-15 type recoil system, comprising the standard recoil systems of many commonly used rifles including the AR-10, AR-15, M-16 and M-4. This shortened recoil system removes or replaces the parts of the traditional recoil system located in the stocks of these rifles and place the entire recoil system within the receiver, while maintaining the alignment of the recoil system with the barrel of the rifle. A major advantage of the present system is that it allows the rifle to be fired with a folded stock or even with no stock at all, as no part of the present recoil system is located within the stock.

A delayed blowback mechanism integrated into a firearm bolt and carrier subassembly. A cam pin extends from the bolt and, upon initiation of the cartridge discharge cycle, engages a guiding clearance or pocket configured within the firearm upper receiver for providing recoil and discharge force attenuation in a radial delayed fashion during cycling of the bolt carrier group. Recoil attenuation between the cam pin and upper receiver clearance can be provided alone or assisted by chamfer or angled contour to either or both of the radially projecting and rear contact surfaces of the bolt locking lugs and the opposing inward projections configured within the barrel extension grooves. In any variant, the bolt and associated carrier retain sufficient inertia to cycle through the discharge cycle to the set position concurrent with reloading a subsequent cartridge.

A delayed blowback mechanism integrated into a firearm bolt and carrier subassembly. A cam pin extends from the bolt and, upon initiation of the cartridge discharge cycle, engages a guiding clearance or pocket configured within the firearm upper receiver for providing recoil and discharge force attenuation in a radial delayed fashion during cycling of the bolt carrier group. Recoil attenuation between the cam pin and upper receiver clearance can be provided alone or assisted by chamfer or angled contour to either or both of the radially projecting and rear contact surfaces of the bolt locking lugs and the opposing inward projections configured within the barrel extension grooves. In any variant, the bolt and associated carrier retain sufficient inertia to cycle through the discharge cycle to the set position concurrent with reloading a subsequent cartridge.

A firearm buffer includes a buffer casing having a casing chamber with open and closed ends, and buffer weight within the casing chamber. A buffer plug is received in the open end of the buffer casing. A cross pin extends through at least a portion of the buffer plug retaining the buffer plug on the buffer casing. A locking pin is longitudinally displaceable between a first position and a second position. In the first position, the locking pin is engaged with the cross pin and retains the cross pin in position with respect to the buffer plug. In the second position, the locking pin is disengaged from the cross pin such that the cross pin is removable from engagement with the buffer plug thereby permitting disassembly of the firearm buffer. A method of assembling a firearm buffer is also included.

A firearm buffer includes a buffer casing having a casing chamber with open and closed ends, and buffer weight within the casing chamber. A buffer plug is received in the open end of the buffer casing. A cross pin extends through at least a portion of the buffer plug retaining the buffer plug on the buffer casing. A locking pin is longitudinally displaceable between a first position and a second position. In the first position, the locking pin is engaged with the cross pin and retains the cross pin in position with respect to the buffer plug. In the second position, the locking pin is disengaged from the cross pin such that the cross pin is removable from engagement with the buffer plug thereby permitting disassembly of the firearm buffer. A method of assembling a firearm buffer is also included.

A suppressed pistol has a breech block and a slide mounted on a frame. The breech block and slide are separate pieces, movable relatively to one another and the frame. A link extends between the breech block and the frame. The link carries a cam and a cam follower. The cam follower on the link engages a cam on the frame, the cam on the link engages a cam follower on the slide. Action between the cams, cam followers and the link causes separation between the breech block and the slide during operation of the pistol. The suppressor includes a container having baffle plates with truncated cones defining openings offset from the geometric centers of the baffle plates.

A suppressed pistol has a breech block and a slide mounted on a frame. The breech block and slide are separate pieces, movable relatively to one another and the frame. A link extends between the breech block and the frame. The link carries a cam and a cam follower. The cam follower on the link engages a cam on the frame, the cam on the link engages a cam follower on the slide. Action between the cams, cam followers and the link causes separation between the breech block and the slide during operation of the pistol. The suppressor includes a container having baffle plates with truncated cones defining openings offset from the geometric centers of the baffle plates.

The present device is a shortened recoil system designed to replace the AR-15 type recoil system, comprising the standard recoil systems of many commonly used rifles including the AR-10, AR-15, M-16 and M-4. This shortened recoil system removes or replaces the parts of the traditional recoil system located in the stocks of these rifles and place the entire recoil system within the receiver, while maintaining the alignment of the recoil system with the barrel of the rifle. A major advantage of the present system is that it allows the rifle to be fired with a folded stock or even with no stock at all, as no part of the present recoil system is located within the stock.

The present device is a shortened recoil system designed to replace the AR-15 type recoil system, comprising the standard recoil systems of many commonly used rifles including the AR-10, AR-15, M-16 and M-4. This shortened recoil system removes or replaces the parts of the traditional recoil system located in the stocks of these rifles and place the entire recoil system within the receiver, while maintaining the alignment of the recoil system with the barrel of the rifle. A major advantage of the present system is that it allows the rifle to be fired with a folded stock or even with no stock at all, as no part of the present recoil system is located within the stock.

A spring system for blowback action is provided with a control piece (2) and pusher piece (3) supported so that it can be displaced on the guide rod (7). On its end, a buffer (4) is arranged with a buffer spring (6). The guide rod (7) is also used for guiding the closing spring (8). Between the control piece (2) and pusher piece (3) there are five rollers (10) in a recess (9) of the guide rod (7), and these rollers cause a delay of the action during the blowback after the discharge of a shot.