Abstract: The embodiments described herein include a trigger assembly for a firearm including a rotatable disconnector biased by a detent ball and a return spring to reset the trigger, whereby resetting said trigger causes the rotation of said disconnector to completely decompress said return spring thereby providing no spring pressure on the trigger.

Abstract: Disclosed is a linear trigger mechanism for a firearm. In certain examples, the trigger mechanism includes a trigger housing defining a linear pathway and configured to house a trigger, a sear, and a disconnector. The trigger has a top surface, and a sear ramp and a disconnector ramp disposed on the top surface. The trigger is configured to move along the linear pathway that is substantially parallel with a bore axis of the firearm. The trigger mechanism also includes a trigger return compression spring configured to urge the trigger into a default position, and a sear compression spring configured to urge the sear into a default position.

Abstract: A translational yoked trigger for a firearm has an integral trigger safety.

Abstract: A surgical stapling apparatus (stapler) is provided. A tool assembly includes first and second jaw members. A cartridge assembly includes an actuation sled and a slide. A drive member having a working end is configured to translate through the tool assembly when the first and second jaw members are in a closed configuration. A lock assembly including a latch is movable from a locked position to an unlocked position. The latch is urged to the locked position to engage the working end to prevent distal translation of the drive member through the tool assembly. The slide is configured to move the latch from the locked position to the unlocked position upon installation of an unspent cartridge assembly onto the first jaw member. The slide is movable by the drive member upon actuation of the stapling apparatus to allow the latch to move back to the locked position.

Abstract: Disclosed is a new rifle mechanism that can be used in both rifles and shotguns, which has a higher firing power because of included components and allows the rifle structure to be used more efficiently.

Abstract: A firearm action has a receiver defining a bolt passage and having a latch engagement facility, a bolt assembly including a bolt body received in the passage and operable to reciprocate between a forward battery position and a rear open position, the bolt assembly including a bolt handle movable with respect to the body between a handle forward position and a handle rearward position, the bolt assembly including a bolt latch body having a latch element, the bolt latch body movable between a locked condition in which the latch element engages the latch engagement facility when the bolt assembly is in the forward position and the bolt handle is in the forward position to prevent reciprocation of the bolt, and an unlocked position in which the latch element is disengaged from the latch engagement facility to enable reciprocation of the bolt.

Abstract: A trigger mechanism according to various aspects of the present technology is configured to provide a more effective method of securing a hammer after a firearm is fired. Various embodiments of the trigger mechanism comprise a main sear and a sear link that are used to mechanically link a trigger body to the hammer. The main sear maintains engagement with the hammer throughout an actuation cycle and is configured to catch the hammer as it rotates after striking a round of ammunition.

Abstract: A revolver type cylinder with a plurality of chambers for a shotgun. The rotating cylinder is generally hexagonal in cross-section and formed as an injection molded plastic part with openings that receive metal chamber sleeves. The cylinder has a rotation axis and a seventh opening surrounding the axis. The cylinder is mounted to, and rotatable on a receiver on a rotor and a cylinder pin captured within the seventh opening so as to prevent rotation of the cylinder pin with respect to the cylinder body. The cylinder pin has portions forming a central axial opening which extends along the rotational axis and a spring arranged to retract the cylinder pin into the cylinder body. A trigger linkage is mounted for movement in the central axial opening for linking a trigger to a firing mechanism through the opening.

Abstract: A fire control selector for an automatic firearm capable of automatic or semiautomatic fire is provided. The firearm has a receiver having a moveable hammer. The selector is rotatably mounted in the receiver. A first sear is rotatably mounted in the receiver to engage the hammer where the first sear contacts a first camming surface of the selector. A second sear is rotatably mounted in the receiver to engage the hammer where the second sear contacts a second camming surface of the selector. A disconnect is rotatably mounted in the receiver where the disconnect contacts a third camming surface of the selector. The selector has a number of selectable positions.

Abstract: A semi-automatic pistol is provided having a frame, a slide and an arced cam surface extending longitudinally on an inner surface of the slide. The pistol has a barrel mounted between the frame and the slide, and a firing pin mechanism mounted in the slide. A trigger is mounted on the frame. A trigger bar and a sear are also provided. The trigger bar includes a generally planar surface extending between the ends of the trigger bar. The first end is connected to the trigger and the second end has a sear disconnect surface to engage and disengage a sear rotatably disposed in the frame that engages an end of the firing pin. A tab is disposed at an angle to the generally planar surface, where the tab has a top curved surface to slide along the arced cam surface of the slide as the slide moves.

Abstract: A cocking/de-cocking mechanism for semi-automatic striker-fired pistols having a multi-function cocking lever for controlling, by rotational movement, the cocking or arming of the tiring pin, while effecting de-cocking by the lateral displacement of the cocking lever on its support pin.

Abstract: The invention discloses a safety mechanism of a handgun which depends on a magazine and which prevents the triggering of a handgun when the magazine is removed. Additionally, a mechanism enables handgun disassembly without need for the triggering after the magazine has been removed from the handgun. A safety mechanism is positioned inside the handgun receiver; including a magazine, sear catcher, sear catcher spring, grip safety pin, sear, sear pin, firing pin safety lever and firing pin. When the magazine is inserted into the handgun, the sear catcher is pushed into position in which it cannot block the firing pin safety lever nor catch the sear. When the magazine is removed from the handgun, the sear catcher spring pushes the sear catcher into position in which it blocks the firing chain by blocking the firing pin safety lever.

Abstract: Firing assemblies for use with firearms are described. A firing assembly for use with a firearm includes a hammer pivotably coupled to a hammer shaft. The hammer includes a hammer stop notch that at least partially engages a portion of a lever of a trigger assembly when the hammer is in a cocked position and a control curve section that engages a surface of the lever to retain the lever in an unlocked position as the hammer moves between the cocked position and a firing position. Additionally, the firing assembly includes a control element pivotably coupled to the hammer shaft and adjacent the hammer, wherein the control element includes a first control curve portion that at least partially adjoins the control curve section and wherein the hammer interacts with the control element to change a control curve region as the hammer moves between cocked position and the firing position.

Abstract: A safety selector for selectively implementing a firing disabled position for the prevention of unintentional firing of a firearm. The safety selector comprises two prongs adapted to push a cross bolt safety actuation lever to the right or to the left. A DC electrical motor provides torque, which is transferred through a torque transferring mechanism, to the safety selector. The safety selector is particularly useful for actuation via remote control.

Abstract: An automatic firearm capable of automatic or semiautomatic fire. The firearm has a receiver having a moveable hammer. A selector is rotatably mounted in the receiver. A first sear is rotatably mounted in the receiver to engage the hammer where the first sear contacts a first camming surface of the selector. A second sear is rotatably mounted in the receiver to engage the hammer where the second sear contacts a second camming surface of the selector. A disconnect is rotatably mounted in the receiver where the disconnect contacts a third camming surface of the selector. The selector has a number of selectable positions disposed so that rotation of the selector between a first and last selectable position of the number of selectable positions is less than 180 degrees.

Abstract: A firearm has a frame with a barrel connected to the frame and defining a barrel axis. The barrel has a rear end defining a chamber, and a bolt assembly reciprocates with respect to the chamber between a closed position adjacent the chamber, and an open position away from the chamber. A fire control assembly includes a trigger and a selector switch with a semi-automatic position and a fully-automatic position. The fire control assembly includes a bolt assembly sear operably engaging the bolt. The fire control assembly operates when the selector switch is in the semi-automatic position in response to pulling the trigger to discharge the firearm, to load a cartridge, and to position the bolt in the closed position. The fire control assembly operates when the selector switch is in the fully-automatic position in response to pulling the trigger to discharge the firearm, and to hold the bolt in the open position.

Abstract: An automatic firearm capable of automatic or semiautomatic fire. The firearm has a receiver having a moveable hammer. A selector is rotatably mounted in the receiver. A first sear is rotatably mounted in the receiver to engage the hammer where the first sear contacts a first camming surface of the selector. A second sear is rotatably mounted in the receiver to engage the hammer where the second sear contacts a second camming surface of the selector. A disconnect is rotatably mounted in the receiver where the disconnect contacts a third camming surface of the selector. The selector has a number of selectable positions disposed so that rotation of the selector between a first and last selectable position of the number of selectable positions is less than 180 degrees.

Abstract: In an automatic rifle which has been converted for non-military purposes to be semi-automatic by the removal of parts that allow its automatic function, additional suppressing elements are provided to ensure that the interruptor remains depressed until the bolt carrier fully passes the striker catch before the striker catch is engaged by the interruptor. This prevents premature connection of the striker catch and the interruptor, which could prevent sufficient striker spring pressure so that the next round can be fired. In one embodiment the trigger mechanism is fitted with an additional suppressing element (10) formed as a side push plate 7 on the bridge (6) of bolt carrier (5).

Abstract: An automatic firearm capable of automatic or semiautomatic fire. The firearm has a receiver having a moveable hammer. A selector is rotatably mounted in the receiver. A first sear is rotatably mounted in the receiver to engage the hammer where the first sear contacts a first camming surface of the selector. A second sear is rotatably mounted in the receiver to engage the hammer where the second sear contacts a second camming surface of the selector. A disconnect is rotatably mounted in the receiver where the disconnect contacts a third camming surface of the selector. The selector has a number of selectable positions disposed so that rotation of the selector between a first and last selectable position of the number of selectable positions is less than 180 degrees.

Abstract: A firearm includes a frame and a slide. A firing mechanism for the firearm includes a striker-type firing pin, a trigger, and a trigger bar. A sear inside the frame is pivotally balanced about a central fulcrum, and is biased in a first pivotal direction by a spring. In this position, a rear portion of the sear engages the firing pin. Actuation of the trigger causes the trigger bar to move rearwards for engagement of a forward portion of the sear. This pivots the sear in a second pivotal direction, against the spring, which releases the firing pin. The spring then causes the sear to pivot back for reengaging the firing pin when it returns to its rear position. Movement of the slide to a retired position causes the trigger bar to disengage from the sear (preventing discharge of the firearm) until the slide returns to a battery position.

Abstract: A closed bolt system with a trigger assembly for converting an open bolt, blowback type submachine gun into a single firing carbine is provided. The closed bolt system with trigger assembly includes a tensioned trigger member supporting a tensioned disconnector system. A tensioned sear interacts with the disconnector system and a tensioned hammer. The hammer strikes a firing pin in the bolt when it is released from the sear. The blowback of the bolt, as a result of expanding gases from the exploding and exiting round, re-cocks the hammer by re-engaging the sear with the hammer and disengages the sear from the disconnector system. Only after releasing the trigger will the sear re-engage with the disconnector system and thereby permit another round to be fired. A receiver having a cavity encloses the bolt and prohibits a fully automatic bolt to be used therewith.

Abstract: An authorization system for a firearm (10) includes an authorizing device (32) worn by the authorized user, and a firearm (10) with a fire control system, a computer controller (28), and a piezo-electric disabler (60). The computer controller (28) communicates with the authorizing device (32), and if no authorizing signal is received from the authorizing device, sends an electric output signal to the disabler (60) to prevent the fire control system from allowing the firearm to fire. The disabler, upon application of the electrical signal from the computer controller, cams the rearward moving trigger bar (52) of the fire control system clear of the hammer link (54) to disrupt the fire control system. Consequently, the firearm (10) will not fire.

Abstract: A method for removing the slide from a semi-automatic firearm is provided that includes the steps of: (1) providing an access port within the slide of the firearm that is positioned to align with the firing mechanism of the firearm; (2) inserting a probe into the access port; and (3) manipulating the firing mechanism with the probe, and thereby enabling the slide to be removed from the frame. A semi-automatic firearm is also provided that includes a frame, a slide removably mounted on the frame, a striker firing-pin mounted within the slide, a firing mechanism, and an access port disposed in the slide. When the slide is in a predetermined position, the firing mechanism can be accessed through the access port with a probe and manipulated to allow removal of the slide from the frame.

Abstract: A fire control system with a decocking lever that operates to decock the hammer and also as a safety. The fire control system also has a magazine safety to complement the decocking lever's dual functions. The magazine safety is in the “safety on” position when a magazine is not fully seated in the magazine well and in the “safety off” position when the magazine is fully seated. In one embodiment, rotating the decocking lever by lifting one of the thumb tabs applies the safety if the hammer is cocked and rotating the decocking lever in the other direction causes the sear to release the hammer but catch it before it reaches the firing pin. In an alternate embodiment, the decocking lever can be used as a safety regardless of whether the hammer is cocked or not. Further rotation lower a cocked hammer.

Abstract: A device is disclosed for a weapon for firing burst of several shots. The device unlocks and latches the rifle bolt in the rear position to avoid heat distribution from the chamber or barrel to the powder or explosives in the booster charge or the explosive projectile, and to prevent firing by emptying or handling the weapon. The activator moves the trigger into engagement with the stop flap of the rifle bolt, thereby releasing the spring force of the rifle bolt forwardly during firing only when the rifle bolt and the cover are in the locked position.

Abstract: A noise and recoil suppressor that is intended to be mounted within the terminal portion of a firearm barrel. The suppressor is a unitary structure having a cylindrical body and a plurality of chambers extending transversely therethrough and spaced-apart in the longitudinal direction of the device. The chambers are configured so as to restrain and slow the passage of the exhausting gases resulting from a bullet that has discharged and passing therethrough so as to suppress both the resulting noise and recoil from the discharging firearm. The suppressor is provided with external threads adjacent its outer end, and a firearm barrel into which the device is to be slidably inserted is suitably drilled-out and provided with internal threads for threadable securement of the device within the end of a firearm barrel. A second and shorter embodiment of the suppressor is disclosed that primarily functions as a recoil suppressor.

Abstract: A trigger arrangement for an automatic weapon with switch-over between continuous firing and single-shot modes includes a hammer, a breechblock, a latch, a pivotably mounted trigger, and a firing lever. In the single-shot mode, the firing lever engages the hammer and retains it in tension while the trigger is depressed. When the continuous firing mode is selected, the firing lever is moved to an inactive position and retained by an engaging element. The engaging element is preferably a slider which is controlled by a safety and firing cessation roller that is actuated by an operating lever.

Abstract: A method of reversibly converting pistols that have been manufactured as double action pistols to single action, target pistols. The double action pistols have an initial trigger stroke for the double action performance thereof. The length of the trigger stroke is substantially reduced by the removable placement of an abutment between opposed portions of the trigger and the frame, i.e., to the top of the trigger, to substantially shorten the full length of the trigger stroke. The hammer is modified to include an intermediate notch of sufficient depth and positioned to serve as a safety in the event that the hammer is dislodged in its fully cocked position. Any other mechanisms that inhibit the conversion to single action are removed, depending upon the pistol's structure. Such mechanisms may include the firing pin safety mechanism. The trigger, sear and hammer may be modified by replacement with parts having the desired features.

Abstract: A coupler for attaching a suppressor to a firearm flash hider. The coupler includes a main body, an inner collar, and an outer collar. The main body defines a through bore configured to closely receive the flash hider at one end and for the passage of the bullet at the other. The main body defines a first threaded portion proximate the central portion thereof, the threads being right-handed threads. The main body defines a sound suppressor attachment device at the second end thereof. The inner collar defines a through bore oriented coaxially thereto. A first end of the through bore is configured to receive the first end of the main body. Proximate the second end of the inner collar, the through bore defines a second inner diameter dimensioned to receive the firearm flash hider. The inner collar carries a plurality of locking fingers, each pivotally mounted on the inner collar via a pivot pin.

Abstract: A device for use as a muzzle brake for an underwater gun having a project conveying structure with concentric inner and outer cylinders. The inner cylinder has at least one longitudinal slot formed therein. A sealing means joins the projectile conveying structure to the underwater gun at the structure's first end. A second end of the structure is provided with a seal for closing the second end after a projectile is fired through it. A piston having an aperture therethrough is positioned inside the inner cylinder and is axially moveable therein adjacent the longitudinal slot. An actuator is positioned between the inner cylinder and the outer cylinder. Actuator links through the longitudinal slot connect the piston with the actuator. After a projectile is fired through the projectile conveying structure to displace the piston from its initial position, the actuator means returns the piston to that initial position to ready the device for reuse.

Abstract: An improved fire control mechanism for firearms in which a connector is interposed between the trigger and the sear with the connector assembly and sear coupled through a linkage, interruptable by a disconnector, such that with a safety cross-button pushed to "Safe" position, the trigger, sear and hammer are blocked when the action is closed. The arrangement prevents accidental discharge of the arm in the event it is dropped, struck or disturbed, and so forth.

Abstract: A noise abatement system for a large caliber gun includes a gun muffler and a projectile stop, both of which are mounted on a concrete slab. The gun muffler can be coupled at an end to a gun tube of the gun and serves to attenuate pressure waves caused by the firing of a projectile by the gun. The projectile stop is longitudinally aligned with the gun muffler and serves to selectively stop projectiles fired by the gun and to selectively permit projectiles to pass. The projectile stop preferably has an opened first end closest to the gun muffler and a second end to which a door is mounted. When it is desired to aim for a target beyond the projectile stop, the doors are opened to permit the projectile to pass through the projectile stop unhindered. When the projectile stop is used to stop projectiles, the doors are closed and the projectile stop is filled with a particulate material, such as sand.

Abstract: A silencer for a firearm is disclosed as comprising a composite outer wall, an end piece which forms a silencer muzzle and in which is located an exit opening, an attachment piece which is attached to said end piece, and a middle piece which is positioned between the attachment piece and the end piece. The middle piece comprises a selected number of successive chambers which are aligned with each other. Each of chambers has a firing opening and an outside wall. Each of the chambers is attached in a modular fashion directly to an adjoining one of the selected number of chambers. The outside walls of the selected number of chambers form the composite silencer wall. The number of chambers is selected in accordance with the intended use of said silencer.

Abstract: A functioning mechanism for a small caliber automatic weapon includes a translatable and rotatable sear, and a rotatable hammer. The sear includes a hooking element adapted to contact a bearing surface of the hammer to render the hammer immobile. Rotating movement of the sear is controlled by the hammer in such a way as to obtain clean contact between the hooking element and the bearing surface.

Abstract: A locking mechanism for a firearm a striker which is slidably mounted in the breach end of the barrel of the firearm for movement between a rearward cock position and a forward firing position. The striker is biased toward the firing position and is moved to the cock position against the bias by an actuator. The fire control mechanism includes a trigger housing which is fixed to the breach end of the barrel and a trigger which is mounted for pivoting movement between a cocked position and a firing position. The sear is also mounted on a housing for pivoting movement between a striker holding position and a striker release position. The sear is effective to hold the striker in its cocked position and is, in turn, held in its regular holding position by the trigger.

Abstract: A muffler for a large caliber gun having a gun tube includes a transition section fitted around the gun tube and engaging the gun tube for preventing the escape of residual combustion gases caused by the firing of a projectile by the gun. Attached to the transition section is at least one pressure vessel which defines a pressure chamber for containing residual combustion gases and attenuating pressure waves. A vent stack is coupled to the pressure vessel at a port of the pressure chamber, and an exhaust blower is disposed in the vent stack for removing residual combustion gases from the pressure chamber between firings. A valve, disposed in the vent stack between the pressure chamber and the exhaust blower, closes during firings of the gun and opens between firings for permitting the exhaust blower to remove residual combustion gases from the pressure chamber.

Abstract: A firearm having a toggle and bolt assembly. The bolt is reciprocal and houses a firing pin connected to a driver which are spring biased by the recoil springs. The firing pin is independent of the bolt and is engaged by a trip and sear mechanism when the weapon is initially cocked. The recoil springs act also as firing pins but are taken out of the system when the gun is cocked. The toggle mechanism is biased toward a bolt closed position by a handle spring. The ejector and trigger are held in place by pins in blind bores to prevent ready conversion to automatic firing.

Abstract: A firearm having a toggle and bolt assembly. The bolt is reciprocal and houses a firing pin connected to a driver which are spring biased by the recoil springs. The firing pin is independent of the bolt and is engaged by a trip and sear mechanism when the weapon is initially cocked. The recoil springs act also as firing pins but are taken out of the system when the gun is cocked. The toggle mechanism is biased toward a bolt closed position by a handle spring. The ejector and trigger are held in place by pins in blind bores to prevent ready conversion to automatic firing.

Abstract: A silencer arrangement for large-caliber guns (3;33,34) including at least one silencer (5;54,55). In order for the system characteristics of the gun (3;33,34) not to be negatively influenced by the heavy weight of the silencer (5;54,55), the silencer is not fastened (5;54,55), as in the case of small-caliber weapons, on the weapon tube or barrel itself, but instead, is arranged on a separate silencer gun carriage (6;39) which is mechanically decoupled from the gun (3;33,34), with the gun carriage (6;39) preferably being configured such that the silencers (5;54,55) may be moved in synchronism with the movement of the gun barrel.

Abstract: A silencer apparatus that can be attached to a standard autoloading handgun having a laser sight module mounted to the front face of the slide of the handgun. The silencer module features additional electronics so that the firing status of the firearm can be ascertained. A skid plate protected switch in the magazine compartment of the handgun provides information as to whether a new clip has been inserted. A flash detector located within the silencer counts the rounds fired and provides a digital read-out of remaining rounds to be fired. Also, the accumulated fired rounds is provided to enable the user to know when the silencer needs cleaning. Noise reduction is provided by a metal honeycomb.

Abstract: A muffler for a large caliber gun having a gun tube includes a transition section fitted around the gun tube and engaging the gun tube for preventing the escape of residual combustion gases caused by a firing of the gun. Attached to the transition section is at least one pressure vessel which defines a pressure chamber for containing residual combustion gases and attenuating pressure waves. A vent stack is coupled to the pressure chamber at a port of the pressure chambers and an exhaust blower is disposed in the vent stack for removing residual combustion gases from the pressure chamber between firings. A valve, disposed in the vent stack between the pressure chamber and the exhaust blower, closes during firings of the gun and opens between firings for permitting the exhaust blower to remove residual combustion gases from the pressure chamber. At least one baffle and orifice assembly in the pressure chamber serves to attenuate pressure waves.

Abstract: A barrel has an inner tube with a chamber at one end and a muzzle at the other. The barrel guides projectiles such as bullets as they are accelerated by a propellant. The inner tube has an aperture near its front end. Propellant passes through the aperture into a propellant chamber formed by the inner tube and an outer tube positioned about and secured to the inner tube. A plurality of ribs extend between the inner and outer tubes. Also, a coolant may be inserted into the propellant chamber to escape through the muzzle with the propellant after the projectile exits the muzzle.

Abstract: A firearm with muzzle noise reducer is disclosed with one or more barrels in which the bullets reach their final velocity in front of the barrel and a muzzle noise reducer constructed such that it can divert propellant gas upon reaching the final bullet velocity. This construction for diverting the propellant generally is in form of openings located length-wise in a barrel. The openings may have different forms and arrangements, e.g. an electronic and/or inertia-activated time-control element that controls the divergence of propellent gas. A method of reducing the muzzle noise is also disclosed.

Abstract: A gun silencer (10) comprises an outer tube (16) having disk-shaped baffles (18) separated by intermediate spacers (20, 23, 25, 27) therein having bores through which discharge from a muzzle (14) of a gun barrel (12) travels. The baffles include rear beveled diversion passage pairs (48a and b) adjacent to and leading from front ports (56) into baffle bores (46) and front beveled diversion passage pairs (50a and b) leading from the baffle bores to rear ports (58) in intermediate spacers leading to outer chambers (even numbers 76-88) formed between the intermediate spacers, the baffles, and the outer tube. A bore (28) of the tube is threaded along its entire length. Front and rear faces 40 and 42 of baffles are knurled.

Abstract: A fire control assembly (400) is provided with increased safety features. A set porch (470) is formed on a disconnect (404) to hold a firing window (416) of the disconnect (404) out of contact with a sear pin (412). A pin (458) engages a safety surface (460) on the disconnect (404) to hold the disconnect (404) in a direction (494) until the firing window (416) passes under the sear pin (412) and the sear pin (412) engages the set porch (470). Once the sear pin (412) is on the set porch (470), the trigger (402) must be pulled to engage the sear pin (412) with the firing window (416).

Abstract: A firearm sound suppressor which includes an outer housing, an interior perforated tube located within the outer housing, and spacing between the outer housing and interior perforated tube, and method of making. The sound suppressor is adapted to be mounted on a firearm.

Abstract: A silencer for use with pistols with a fixed or tilting barrel. The design configuration is such that the sighting line is retained when the silencer is fitted. Handleability of the weapon is not seriously adversely affected by the design configuration and the lightweight structure.

Abstract: A muzzle brake (10) for a gun barrel (12) to be attached coaxially onto the muzzle end of the gun barrel up to a radially extending annular abutment surface (20) and provided with elongated gas discharge openings (14) which are arranged transversely to the axis of the bore (16) over its lateral effective length region (L.sub.2) and have a minimum opening length (L.sub.1) at the rear of the effective length of the muzzle brake (10), i.e., adjacent the position of the abutment surface (20), the axial inner bore (18) of the muzzle brake (10) has an inner diameter (d) which corresponds to the rifling diameter (d.sub.1) of the gun barrel (12) and its rear end ends at the radially extending abutment surface. The gas discharge openings (14) are provided with rearwardly sloped baffles (24) and gas guide surfaces (26) which have different lengths in the rear region of the muzzle brake (10) and have the same opening length (L.sub.1) in the forward region.

Abstract: A spring for positioning a sear of a firearm and a method of manufacturing a firearm. The spring has a first section that is connected to the frame of the firearm, a second section that exerts a biasing force against the sear in a first direction, and a third section adapted to move in a direction relatively perpendicular to the direction of the second section. The second and third sections are preferably leaf springs and are adapted to position the sear in two positions depended upon movement of the trigger.

Abstract: A silencer is provided for a machine pistol which silencer minimizes abrasive or frictional contact between the ballistic fired through the silencer in order to extend silencer life. The silencer includes a series concentric screen baffles which are retained in two concentric tubes. In the inner tube, a plurality resilient wipes are provided to contact the ballistic fired through the silencer without allowing contact between any of screen baffles in the fired ballistic.