Abstract: A buttstock assembly configured to work in conjunction with a compact buffer assembly consisting of a buffer tube, spring and bolt carrier with an integral buffer is provided. The buttstock assembly, buffer tube and bolt carrier are configured to work with AR15/M16 type firearms and their derivatives. By incorporating the buffer onto the bolt carrier, which is used in conjunction with a buffer tube of reduced length, the overall length of the host firearm is reduced by approximately 3.2 inches. No permanent modification need be made to the host firearm in order to utilize the compact buffer assembly and buttstock assembly disclosed herein.

Abstract: A semi-automatic pistol is provided having a barrel, a frame and a slide. The slide is adapted for linear motion along the frame during a firing sequence and has a forward end and a block end. The forward end has an upper cam follower surface and a lower cam follower surface on the inside surface adjacent to the barrel. The barrel has a ramp cam surface adjacent to the chamber end of the barrel to effect locking and unlocking of the barrel relative to the slide during the firing sequence, a bottom cam surface and a top cam surface. The bottom cam surface and the top cam surface extend from the front end toward the chamber end of the barrel and each have undulating surfaces that moves against the lower cam follower surfaces of the slide to cause oscillation of the barrel while the slide moves during the firing sequence.

Abstract: Straight-pull breechblock (20) with rotating-boss locking mechanism for repeating weapons, having a breechblock head (27) which is guided in a longitudinally and rotationally movable manner in a breechblock housing (22) and has locking bosses (42, 43), and having a breechblock sleeve (24) which carries a bolt handle (28) and in which is mounted a firing pin (23) which is acted upon by a firing spring (53), for the movement of the breechblock head (27) in the longitudinal direction, while the rotational movement thereof is forced by way of the pretension of the firing spring (53) which acts on the firing pin (23), wherein by way of a forcibly controlled spring-mounted stopping lever (58) associated with the breechblock sleeve (24), relative movements between the breechblock head (27) and the breechblock sleeve (24) can be prevented until the breechblock head (27) has gone into the region of the locking chamber (44) of the breechblock housing (22).

Abstract: A bolt assembly (1) for a self loading rifle comprises a rotating bolt (2) mounted in a bolt carrier (3), the bolt being provided with locking teeth (6) which, in use, interengage with teeth (7) on the barrel extension (8) of the weapon. The angular position of the bolt relative to the bolt carrier is controlled by a cam pin (9) which runs in a cam slot (10) in the bolt carrier. When the bolt is clear of the barrel extension it is locked in the correct angular position by a lever (11) which is pivotally mounted in the bolt carrier.

Abstract: A semi-automatic rifle including a recoiling barrel adapted to carry rearward the elongated bolt carrier containing the bolt for compressing the recoil spring, and a self-unlocking device including a self-unlocking rod longitudinally slidably mounted on the bolt carrier normally engaging the rear face of the barrel in a battery position and a trigger actuating device for thrusting the self-unlocking rod forward during the early stage of recoil for separation of the bolt carrier from the barrel before the barrel reaches the end of its recoil movement.

Abstract: A bolt assembly for an automatic firearm which operates using kinetic recoil energy that includes a floating bolt element, a rotatable locking bolt head and a return spring interposed between them, all in communication with the barrel. The bolt head is formed with a cylindrical portion having two crescent shaped projections located at diametrically opposite points along the circumference of the cylindrical portion. The barrel is formed with two diametrically opposite recesses associated with and shaped to correspond to the projections. The barrel is also formed with a pair of grooves, each groove associated with a recess such that the projections may enter and exit the grooves through the recesses. The grooves are staggered with respect to the recesses and have an angular extension such that the projections may enter and be retained within the grooves.

Abstract: An improved automatic firearm. The firearm comprises a body assembly including a body member, a barrel mounted in said body member, a trigger assembly mounted to said body member proximate to the front end of the barrel, and a magazine guide in the body member spaced apart from and behind the trigger assembly. In addition, the body member suitably comprises a one-piece body cut to length.

Abstract: A feature of this invention is the provision of a gun bolt for a Gatling type gun having a carriage with a head journaled therein and a firing pin journaled in said head together with a cocking pin disposed in a slot passing through the firing pin, the head and the carriage with a detent disposed in a longitudinal bore of said head aft of said firing pin and having a portion thereof extending forwardly through a longitudinally extending bore in said firing pin and into a cavity in said cocking pin with a spring means disposed in said longitudinal bore of said head aft of said detent and biasing said detent into engagement with said cocking pin.

Abstract: A feature of this invention is the provision of a Gatling type gun having the minimum, yet adequate, longitudinal clearance between the locking lugs of the rotor and the locking lugs of the gun bolts, by having the helical main cam track of the gun which reciprocates the gun bolts between forward dwell and aft dwell during each gun cycle also provide a subcycle of reciprocation of each gun bolt while it is in front dwell. This subcycle provides adequate clearance of the lugs of the rotor and the gun bolts to permit free rotation of the bolt into and out of lock, while providing no clearance during actual firing.

Abstract: A gun is provided having an operating mechanism and an energy storage system which receives and stores energy from the gun housing during the recoil of the gun and which subsequently transfers said stored energy to said operating mechanism during each gun cycle.

Abstract: A gun is provided having an operating mechanism which receives and stores energy from the gun housing during the recoil of the gun and which subsequently utilizes the stored energy in two distinct phases during the counter-recoil of the gun.