FIREARM

Abstract

The invention relates to a firearm comprising: a housing (1) having a receptacle (2) for several cartridges or for a magazine with cartridges: a barrel unit (3) which is located in the housing (1) and has a barrel (4) and a cartridge chamber (6): a breechblock (8), which can be moved relative to the housing (1) and is biased in the firing direction by means of a return spring (7), for conveying cartridges into the cartridge chamber (6) or cartridge cases to an ejection port; and a gas braking device which is located in the housing (1) and comprises a cylinder (9) which is positioned parallel to the barrel (4) and which is connected to the interior of the barrel (4) via a gas extraction opening (10); and a piston (11) which can be moved inside the cylinder (9) and which is coupled to the breechblock (8). The breechblock (8) is located in a breechblock carrier unit (12) which is located completely inside the housing (1) over the entire movement path while a shot is being fired and during a reloading operation, the breechblock carrier unit (12) comprising the breechblock (8) itself, two connecting sections (13) guided parallel to the barrel (8) in the housing (1), and a coupling section (14) to be coupled with the piston (11) of the gas braking device.

Claims

1. A firearm comprising: a receiver with a chamber for a plurality of cartridges or for a cartridge-holding magazine, a barrel subassembly in the receiver and having a barrel with a muzzle and a breech at the opposite end, a bolt movable longitudinally of the barrel relative to the receiver, a recoil spring biasing the bolt in the firing direction for conveying cartridges from the chamber or from the magazine into the breech or for conveying cartridge cases to an ejection port, a gas brake device in the receiver and including a cylinder extending parallel to the barrel and connected to the interior of the barrel via a gas port and a piston movable within the cylinder and coupled to the bolt, and a slide that is completely inside the receiver over the entire path of movement during firing and reloading, the slide being formed with the bolt itself, two webs extending parallel to the barrel in the receiver, and a coupling section for coupling to the piston of the gas brake device.

2. The firearm according to claim 1, wherein the slide is formed in one piece.

3. The firearm according to claim 1, wherein the gas port is in the barrel near the bolt end.

4. The firearm according to claim 1, wherein a cover is provided that is displaceable relative to the receiver longitudinally of the barrel and that is biased toward its closed position by a spring, the cover having a driver section projecting inward into the receiver that is couplable to the slide for manual reloading when the cover is moved against the firing direction, but is decoupled from the slide when the cover is in its closed position.

5. The firearm according to claim 1, wherein the recoil spring surrounds the barrel and is supported between a nonmoving part inside the receiver and the slide.

6. The firearm according to claim 1, wherein the recoil spring surrounds a guide rod extending parallel to the barrel and is connected to an immovable part of the receiver and is braced between an immovable part inside the receiver and the slide.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The invention will now be described in greater with reference to an embodiment example and with the aid of the accompanying figures. Therein:

[0014] FIG. 1 is a schematic exploded view of the essential elements of a firearm according to the inventive handgun,

[0015] FIG. 2 is a schematic longitudinal section through the inventive handgun with a closed bolt,

[0016] FIG. 3 is a schematic longitudinal section through the firearm according to FIG. 2 shortly after firing in an intermediate position with the bolt already partially moved to the rear, and

[0017] FIG. 4 is a schematic longitudinal section through the firearm according to FIG. 2 with the slide moved fully to the rear.

WAY (S) TO CARRY OUT THE INVENTION

[0018] The firearm according to the invention, shown schematically in an exploded view in FIG. 1, has a receiver 1 with a chamber 2 (see FIG. 2) for a magazine. A trigger 17, a hammer 18 as well as a barrel subassembly 3 and a slide 12 are in the receiver and the top of the receiver 1 is closed by a cover 15 movable longitudinally. The barrel subassembly 3 comprises a barrel 4 with a muzzle 5 at the front and a breech hole 6 at the rear (see FIG. 2). Furthermore, in the example shown, the barrel subassembly 3 holds a cylinder 9 of a gas brake device and a guide rod 16 for a recoil spring 7. The slide 12 comprises the actual bolt 8 and a coupling section 14 rigidly connected to it via two connecting web 13 to which a piston 11 of the gas brake device is fixed.

[0019] FIGS. 2 to 4 show the individual positions of the slide 12 before firing and during the reloading process in a schematic longitudinal sectional view.

[0020] FIG. 2 shows the situation before a shot is fired. A cartridge and a magazine filled with cartridges in the receiver 2 are not shown. Before firing, the slide 12 is in a front bolt-closed position. The bolt 8 is biased in the firing direction against the breech 6 via the recoil spring 7, which engages with the coupling section 14 of the slide 12.

[0021] As soon as a shot is fired by actuating the trigger 8, the bullet moves from the bolt 6 into the barrel 4. The gas port 10 is directly adjacent the bolt 6 and connects the inside of the barrel 4 with the cylinder 9 of the gas brake device. Immediately after the shot is fired, the gas pressure builds up on the one hand in the direction against the firing direction at the bolt and on the other hand gas flows into the cylinder 9 via the gas port 10, whereby the gas pressure also acts in the firing direction on the piston 11 that thus also acts on the bolt 8 via the coupling section 14 to keep it closed. Regardless of the level of the actual gas pressure, the pressure in the cylinder 9 and in the barrel 4 balance each other out so that the bolt 8 remains closed until the bullet leaves the barrel.

[0022] After the bullet leaves the barrel, the gas pressure suddenly drops and the bolt can open and start moving rearward. An intermediate position with half-open bolt 8 is shown in FIG. 3. The coupling section 14 rigidly connected to the bolt 8 via the webs 13 also moves rearward and compresses the recoil spring 7.

[0023] FIG. 4 finally shows the rear disengaged position of the slide 12. Here, the spent cartridge case has already been ejected and the recoil spring 7 begins to move the slide 12 back to the front position, and a further cartridge is conveyed from the magazine into the bolt 6, after which the position shown in FIG. 2 is reached again.