Abstract: A firearm including a gas drive, having an annular piston which is displaceably arranged on the barrel to form an expansion chamber between two end positions. At least one gas port penetrates the wall of the barrel in the region of the expansion chamber and a selector is provided. In order to provide a simple and easily adjustable mechanism, the expansion chamber is delimited by a ring surface and an inner cylinder surface of the piston, an end surface of the selector and the barrel. The selector is rotatably arranged on the barrel with at least two predefined rest positions. In each rest position, the gas flow from the expansion chamber is delimitable by at least one selector opening formed on the selector.

Abstract: A firearm safety mechanism assembly is provided. The firearm safety mechanism assembly includes a firearm with a receiver, a trigger guard coupled to the firearm, and a housing pin. The firearm safety mechanism assembly includes a trigger safety mechanism. The trigger safety mechanism includes a plate, a rod extending from the plate, a trigger coupled to the rod, and a lever nested within the trigger. The lever includes a lever first end and a lever second end, where the lever rotates between a first position and a second position. In the first position, the lever first end abuts a housing pin.

Abstract: A Gatling type machine gun system whose rotational operation of subsystems is accomplished by way of a plurality of electronically controlled motors. The Gatling type gun system includes a core gun, a feeder subsystem, and a transfer subsystem each of which must operate at particular instance and speed to accomplish the proper operation of the gun system. Control of the gun and subsystems is provided by electronically controlled motors.

Abstract: A magazine safety for a semiautomatic firearm uses two levers connected via a floating pin. The first lever is pivotable into and out of the magazine well. The second lever is spring biased to position a spur extending therefrom into the path of a trigger bar. An end of the second lever is connected to the first lever via the floating pin. In the absence of the magazine from the magazine well the first lever will rotate into the magazine well, thereby permitting the second lever to rotate and position the spur in the path of the trigger bar to prevent discharge of the firearm.

Abstract: The present invention relates to a safety device for firearms that enables providing additional safety to the original safety of the weapon itself, such that safety conditions prevail in either of the two systems, the original safety of the weapon or the additional safety device object of the present invention, such that if either of the two is in safe or in locked position, the firearm is in safe or locked position, the safety device for firearms being configured to be implemented in a new firearm or an existing firearm, wherein the invention further relates to a safety method for firearms.

Abstract: Firearms where the bolt catch can be released from either side using the same or a substantially similar motion using contact features that look, feel, or operate similarly on both sides, that are located within the firearm rather than externally, that can be used more easily or reliably, or a combination thereof. In some embodiments, a bolt catch engagement feature, magazine release mechanism, or both, are also (e.g., similarly) ambidextrous. In many embodiments, a user action on one side of the firearm is substantially similar to, but in the opposite direction from, a user action on the other side that performs the same function. In various embodiments, a left button, pad, or feature is directly opposite and in line with a right button, pad, or feature. Bolt catches can use two levers and magazine release mechanisms can use two parallel elongated members perpendicular to the barrel and a catch actuator.

Abstract: An improved bolt and bolt carrier with integral gas key having an extension nozzle threadedly secured and pinned to the gas key for use with a direct gas operated firearm is provided. The extension nozzle is designed to receive a portion of the host firearms gas operating system. The firing pin retaining pin is oriented so as to expose its widest profile to the firing pins annular flange, increasing its service life. The bolt has a plurality of lugs extending from its forward end and an extractor recess. The extractor recess is constructed to accommodate an enlarged extractor claw while not undercutting the bolt lugs adjacent thereto. The extractor engages approximately 57% more of a seated ammunition cartridges rim as compared to some prior art AR15/M16 type extractors used with automatic firearms chambered in 6.8 SPC. The result is an improved bolt and bolt carrier which provides for increased operational reliability.

Abstract: An ambidextrous bolt stop for use with a firearm generally includes a first bolt stop element having a bolt stop finger and a first release lever operatively connected to a left side of a receiver of the firearm and a second bolt stop element having a second release lever operatively connected to a right side of the firearm. The second bolt stop element engages the first bolt stop element via a yoke and pin type configuration interior to the receiver of the firearm. The first and second release levers include first and second buttons located exterior to the receiver on respective sides thereof to actuate the bolt stop.

Abstract: Firearms, breechblock stops for firearms and methods of operating the same are disclosed. An example firearm includes a trigger that requires a force to be released, a trigger guard, a breechblock, and a spring-loaded breechblock stop that is operable between a resting position and an operative position. The example breechblock stop includes a slider control that has a control extension in the trigger guard. The firearm also includes a removable ammunition magazine that includes a follower. The breechblock stop may be moved between an operative position and a resting position by one of engagement with the follower of the magazine or actuation of the slider in a direction of operation essentially perpendicular to force releasing the trigger. Furthermore, the breechblock is unlocked in a released position when the breechblock stop is in the resting position, and the breechblock is locked in an open position when the breechblock stop is in the operative position.

Abstract: Firearms, breechblock stops for firearms and methods of operating the same are disclosed. An example firearm includes a trigger that requires a force to be released, a trigger guard, a breechblock, and a spring-loaded breechblock stop that is operable between a resting position and an operative position. The example breechblock stop includes a slider control that has a control extension in the trigger guard. The firearm also includes a removable ammunition magazine that includes a follower. The breechblock stop may be moved between an operative position and a resting position by one of engagement with the follower of the magazine or actuation of the slider in a direction of operation essentially perpendicular to force releasing the trigger. Furthermore, the breechblock is unlocked in a released position when the breechblock stop is in the resting position, and the breechblock is locked in an open position when the breechblock stop is in the operative position.

Abstract: A safety lock is disclosed for use with an automatic weapon such as a pistol. The automatic weapon has a hammer which is connected to a spring guide rod on which a striker spring is supported. This rod enters a removable insert during cocking of the hammer. A detent is arranged in the insert. The detent is preferably releasable and designed to prevent entry of the spring guide rod into the insert. The insert is replaceable with an ordinary insert and can accept a lock or a magazine safety or can be designed as an unreleasable detent.

Abstract: The invention relates to a self-loading grenade launcher with a cartridge belt feed which conveys a cartridge with pawls engaging in the cartridge belt of a cartridge belt. An inertia bolt runs forward along a path from a release position against the cartridge chamber under the force of springs and is fitted so as to slide the cartridge conveyed from the cartridge belt by the pawls into the cartridge chamber during this forward movement. A control system coupled to the inertia bolt and the slides converts the forward and recoil movement of the bolt into the transverse alternating movement of the slides. A firing device comprises a firing pin, tensioned by a percussion spring. A housing secured to the cartridge chamber extends along the bolt path and partially surrounds it, the longitudinal axis of which continues the central axis of the cartridge chamber.

Abstract: A firearm having a disconnector movable in two planes to disconnect the gun if the bolt moves rearward, disconnects the gun if the magazine box is removed and is the connecting member between the trigger and the sears. The firearm has a double sear both of which must be released from the firing pin carrier before the firing pin carrier can move into a firing mode. The firing pin carrier has an indicator visible to the operator to indicate whether or not the gun is in a firing mode. The magazine latch has an integral ejector and the barrel has projections between the magazine box is received to align the magazine box to the chamber mouth. Additionally, there is a firing pin retractor plunger in the bolt which separates the firing pin carrier from the bolt immediately after firing to enhance ejection of spent rounds.

Abstract: An ammunition indexing mechanism for moving, responsive to actuation of a trigger mechanism, a cartridge from a selected one of a pair of opposed feedports in a weapon receiver and into alignment with a firing chamber of a barrel assembly of the weapon, has a rotary mechanism for moving through a selected index angle each ammunition cartridge entering through the selected feedport; and a torque assembly for storing energy, responsive to a selected movement of the barrel assembly, until released to operate the rotary mechanism to move, for each selected barrel assembly movement, each sequential cartridge through similar angular displacement to a position aligned with the firing chamber.

Abstract: A firearm having a disconnector movable in two planes to disconnect the gun if the bolt moves rearward, disconnects the gun if the magazine box is removed and is the connecting member between the trigger and the sears. The firearm has a double sear both of which must be released from the firing pin carrier before the firing pin carrier can move into a firing mode. The firing pin carrier has an indicator visible to the operator to indicate whether or not the gun is in a firing mode. The magazine latch has an integral ejector and the barrel has projections between the magazine box is received to align the magazine box to the chamber mouth. Additionally, there is a firing pin retractor plunger in the bolt which separates the firing pin carrier from the bolt immediately after firing to enhance ejection of spent rounds.

Abstract: A select fire automatic pistol comprising: a frame; a slide with a breech-block in the rear which slides on the frame over the barrel to form a cartridge receiving chamber; a floating barrel in the slide having a cartridge receiving rear; a trigger safety lever for preventing the movement of the trigger to the activating position; a magazine drop safety to stop the trigger moving to the activated position when the magazine is not fully seated; a trigger bar connected to the trigger including an ledge for displacement of the firing pin backwards to the rear position; a firing pin including a foot on its rear for engagement with the trigger bar ledge and having a spring threadled on the rear of the firing pin for propelling same forward into the cartridge chamber to fire a cartridge and a spring threadled on the front of the firing pin urging same backwards to stop it entering the cartridge chamber if the pistol is dropped; an ejector plate to eject the empty shells, create a safety zone and stabilize the ledge

Abstract: A system for controlling the application of firing signals to electrically fired ammunition rounds which are chambered in the gun or the like. A plurality of insulated contacts are installed in the firing chamber wall so as to connect electrically to mating insulated contacts which are built into the case of the chambered round. Various configurations of annular contact rings are provided for both the inner surface of a gun firing chamber and for the mating exterior surface of a cartridge to be positioned therein. Timing control circuitry for such systems is also disclosed, suitable for use in a single barrel gun or a multiple barrel gun of the Gatling type or a revolving chamber gun with one or more fixed barrels.

Abstract: A recoil operated hand gun has a main frame (1) constructed from a plurality of releasably interconnected parts (2, 3, 4, 5, 6, 7), a barrel assembly (38), a slide (37) movable relative to the main frame and including a releasably secured breech block (42), a recoil spring (51), a hammer assembly (8, 11, 13, 24, 25) and trigger assembly (28, 30, 31). The barrel assembly and slide are locked together by cooperating cams (39, 7) on the barrel assembly and the main frame which force a wedge cam locking surface (55) on the barrel assembly into engagement with an opening (56) in the slide on the slide's return to its position of rest.

Abstract: The device is for use with an ammunition storage drum for a modern multi-barrel high rate-of-fire machine gun (i.e., "Gatling" type gun) system, in which unfired ammunition rounds are transported from the drum to the gun, and the cases of the spent ammunition are returned from the gun to the drum. When two generally, oppositely positioned spent ammunition sensors within the drum simultaneously detect spent ammunition in the drum, a signal is sent to the gun control unit in time to cut off power. The device prevents spent ammunition from being chambered in the gun, and as a result also permits higher rates-of-fire by the gun.

Abstract: A projectile firing device utilizing a fluid propellant in which an electronic control responsive to a charging signal, cycling of the bolt in the breechblock to a fully closed position and pressure in the firing chamber below a preset value opens a valve to permit pressurized propellant to flow into the firing chamber and closes the valve and enables electronic triggering circuits when the pressure reaches the preset value. The muzzle velocity of the device may be varied by varying the pressure of the propellant in the firing chamber and the rate of fire in the automatic mode may be adjusted electronically. A spring biased injector finger carried by the bolt urges a projectile from a magazine into the bore of the barrel and retains it there to form a gas tight seal until the propellant is ignited. When no projectiles remain in the magazine, the injector finger prevents the bolt from closing completely and therefore inhibits the electronic control from recharging the firing chamber with propellant.

Abstract: In a semi-automatic, magazine-loaded double action firearm wherein the firing pin is cocked and released for firing by a trigger bar articulated to the trigger, a resiliently mounted arm is positioned within the frame of the weapon to intercept and eject the spent cartridge case after each firing. When the magazine is withdrawn from the weapon, the arm forces the trigger bar out of engagement with the firing pin sear, thereby preventing the inadvertent firing of a live cartridge which may have been left in the chamber.

Abstract: A cartridge soft feed mechanism for presenting the cartridge to the chamber f a gun in such a way that the axis of the cartridge experiences no lateral or angular movement during chambering. The cartridge is telescoped into the chamber without ramping, reducing the probability of damage to the cartridge and reducing the chance of chambering stoppage. The feed mechanism is inactivated by a chambered round sensor for refilling the magazine or removing and replacing a chambered round in order to permit barrel movement between its forward extended position and its rearward ready position. While the current weapon (30mm Multishot Grenade Launcher) utilizes a fixed breech and movable barrel, the mechanism is adaptable to movable breech fixed barrel weapons.

Abstract: A belt monitoring apparatus for an automatic firing weapon supplied by a cartridge belt and equipped with a pivotable support element, which support element possesses a work position and a rest position, and wherein the trigger of the firing weapon only can be rocked in the work position of the support element into its actuation position and in which work position the support element is retained for such length of time as there are cartridges at the region of a feeler element. A lever system is provided in order to manually rock the support element out of its rest position into its work position.