In an extractor device (100) mounted in a breech (300) section of a slide with a lower part with functional elements for interaction with an upper region of a grip part (200) of a firearm with an extractor (110) mounted rotatably about an axis of rotation with an extractor claw (111) provided in the region of an end of the extractor (110) close to the barrel (210) of the firearm and a guide element (112) arranged in the region of an end of the extractor (110) remote from the barrel (210) of the firearm and interacting with an extractor spring (120) biasing the extractor (110), in order to limit a rotational movement of the extractor (110) by contacting a cartridge (400) newly supplied from a magazine. The guide element (112) is biased in the direction of a control link (130) by the extractor spring (120) arranged in an inner blind hole (113) of the extractor, said control link being configured in an extractor pocket (310) in the breech section (300) and forming a bearing of the extractor.

In an extractor device (100) mounted in a breech (300) section of a slide with a lower part with functional elements for interaction with an upper region of a grip part (200) of a firearm with an extractor (110) mounted rotatably about an axis of rotation with an extractor claw (111) provided in the region of an end of the extractor (110) close to the barrel (210) of the firearm and a guide element (112) arranged in the region of an end of the extractor (110) remote from the barrel (210) of the firearm and interacting with an extractor spring (120) biasing the extractor (110), in order to limit a rotational movement of the extractor (110) by contacting a cartridge (400) newly supplied from a magazine. The guide element (112) is biased in the direction of a control link (130) by the extractor spring (120) arranged in an inner blind hole (113) of the extractor, said control link being configured in an extractor pocket (310) in the breech section (300) and forming a bearing of the extractor.

A bullpup shotgun which ejects shells from the bottom of its action has a reciprocable cover which, when in a closed position, overlies the breech end of the shotgun's barrel. When in an open position, the cover is in spaced relation to the barrel breech end, allowing access to the shotgun's action to clear an ammunition feed malfunction. The cover is mounted on a butt stock, and is slidable or rotatable relatively to the shotgun's butt stock to effect motion of the cover between the open and closed positions.

An ejector mechanism for a firearm includes an ejector disposed at a forward face of a bolt. The ejector includes a hole designed to provide clearance for the firing pin to pass at least partially through the ejector. The hole may include a counterbore on a rear side of the ejector.

An assembly of a breech (1), a breech block (2) and an ejector (3) wherein the breech (1) is connected to the breech block (2) with the use of a groove (10), arranged in the breech block (2), and a corresponding recess, arranged in the breech (1). An ejector (3) is arranged in the breech (1) that is longitudinally adjustable in a sliding way between the front and rear end position. The ejector (3) is biased by a spring (6) against the shooting direction. On the back of the ejector (3) a recess is arranged that a peg (7) that protrudes from the breech (1) reaches into. At the rear side of the ejector (3), a longitudinal pin (4) is arranged that fits into an opening (5) in the breech block (2) in the rear end position of the ejector (3). On the part of the ejector (3) that protrudes out of the breech (1), a stop surface (9) is arranged for bearing on the breech guide (11) that protrudes out of the breech (1) block.

An assembly of a breech (1), a breech block (2) and an ejector (3) wherein the breech (1) is connected to the breech block (2) with the use of a groove (10), arranged in the breech block (2), and a corresponding recess, arranged in the breech (1). An ejector (3) is arranged in the breech (1) that is longitudinally adjustable in a sliding way between the front and rear end position. The ejector (3) is biased by a spring (6) against the shooting direction. On the back of the ejector (3) a recess is arranged that a peg (7) that protrudes from the breech (1) reaches into. At the rear side of the ejector (3), a longitudinal pin (4) is arranged that fits into an opening (5) in the breech block (2) in the rear end position of the ejector (3). On the part of the ejector (3) that protrudes out of the breech (1), a stop surface (9) is arranged for bearing on the breech guide (11) that protrudes out of the breech (1) block.

Firearms with combined bolt catch and ejector have a bolt defining a bolt face configured to receive a case head of a cartridge, a bolt catch connected to a frame and movable between a first operational position in which bolt reciprocation forward from the rear position is enabled, and a second restraining position in which a portion of the bolt catch restrains the bolt in the rear position, and the bolt catch having an ejector surface portion positioned clear of the bolt face when the bolt catch is in the first operational position and in registration with a portion of the bolt face when the bolt catch is in the second restraining position such that a case head received by the bolt face strikes the ejector surface portion upon movement of the bolt from the forward to the rearward position when the bolt catch is in the second restraining position.

A lower receiver that may be right hand or left hand configurable is provided. The lower receiver includes a static ejector that can be easily configured for right hand or left hand positions within the same lower receiver and a magazine button assembly having a left magazine button and a right magazine button that are operatively coupled together so that either magazine button can be pushed to release the magazine. This allows the gun builder to use this one lower receiver to build a right or left handed rifle.

A lower receiver that may be right hand or left hand configurable is provided. The lower receiver includes a static ejector that can be easily configured for right hand or left hand positions within the same lower receiver and a magazine button assembly having a left magazine button and a right magazine button that are operatively coupled together so that either magazine button can be pushed to release the magazine. This allows the gun builder to use this one lower receiver to build a right or left handed rifle.

The modular upper receiver assembly for firearms is an adapter allowing interchanging of barrels of different calibers to attach to an upper receiver assembly. The adapter assembly serves to provide a quick changeover coupling means for connecting an assortment of barrels of different calibers and lengths to the receiver. The coupling includes a barrel retaining bushing and adapter pair with threaded surfaces on the receiver for a threaded engagement, reinforced with threaded fastener compression for improved rigidity.