A firearm has a frame, a barrel assembly, a slide assembly which holds a recoil assembly, and a firing system with a trigger assembly and safety mechanism. The slide and recoil assemblies are located above the barrel so that the barrel is situated between the topmost part of the frame and the bottom of the slide assembly. The barrel assembly includes a housing which is covered by the slide assembly and secures one side of the recoil assembly. The barrel can be removably connected to the frame through front and rear mounts with removable pins and can modularly connect with the frame and slide assembly so that different caliber barrels can be interchanged. In addition to the trigger, the trigger assembly has a hammer, a sear, a lever arm that engages the trigger, sear and hammer, and springs that bias the trigger assembly components.

In one aspect the invention provides a firearm assembly comprising a barrel, receiver and stock, wherein the assembly comprises a first fastener operable to fasten a first section of the receiver so as to locate the receiver in the stock and so as to align the receiver with the stock, wherein the assembly further comprises a second fastener operable to fix a second section of the receiver in place relative to the stock and wherein the second fastener is adjustable to fix the second section of the receiver in place without applying stress to the receiver. Embodiments of this invention may allow fixing a second section in place relative to the stock which place the second section of the receiver assumes naturally when the first part of the receiver is located and aligned by the first fastener.

A firearm lower receiver and method of use may include a screw disposed to engage a pin housing in an upper receiver to minimize rattling or vibration between the upper receiver and the lower receiver.

A slide cover plate (1) for the slide (2) of a striker-fired hand gun, closes the end portion (4) of the slide (2) opposite to the muzzle (3) and provides support for an end portion (11) of a spring striker unit (5) and/or an end portion (21) of a spring extractor unit (15) inside of the slide (2). The slide cover plate (1) received into a groove (7) provided in the end portion (4) of the slide (2), where the slide cover plate (1) is fixed in its position. The slide cover plate (1) comprises a backwardly protruding part having larger face area than the cross sectioned area of the slide (2) at its end portion (4). The slide cover plate (1) comprises a hollow section, which forms a recess for reaching the end portion (11) of the spring striker unit (5) and/or the end portion (21) of the spring extractor unit (15) by tool when the slide cover plate (1) is pushed into the groove (7) but is at an intermediate position different from the terminal position, said hollow section and recess extend behind the face area of the backwardly protruding part in the direction of the longitudinal axis of the slide (2).

A firearm configured for disassembly into stock, and receiver and barrel assemblies. Stock-receiver and receiver-barrel mounting assemblies facilitate assembling and disassembling the firearm. Modified components are adapted for placement on standard firearms and enable expedited assembly and disassembly. A firearm assembly method is also disclosed.

A firearm configured for disassembly into stock, and receiver and barrel assemblies. Stock-receiver and receiver-barrel mounting assemblies facilitate assembling and disassembling the firearm. Modified components are adapted for placement on standard firearms and enable expedited assembly and disassembly. A firearm assembly method is also disclosed.

Dust cover assembly for a firearm, including a dust cover, a first bushing and a second bushing, a pin guided in the first bushing with pin end and a cover spring. The dust cover assembly lends itself to tool-free mounting/dismounting and disassembly/assembly, as the assembly is configured so that the pin is received spring-preloaded in the axial direction at least in the first bushing and a guide extension for interacting with a guide groove and an insertion groove of the first bushing is formed on the pin. An insertion groove can be formed parallel to the axis of rotation of the pin on the inside of the first bushing, which begins at the outer end of the bushing and ends at the guide groove and is connected to the guide groove.

Slide cover plates, and handguns including the slide cover plates, where the slide cover plates include a primary cover plate portion and a sealing cover plate portion that is movably coupled to the primary cover plate portion so that the sealing cover plate portion has an open position and a closed position, and when in its closed position the slide cover plate provides protection for the interior of the handgun, and when in its open position the slide cover plate does not interfere with the forward movement of the pistol slide.

A semiautomatic pistol has a takedown lever which also acts as an ejector. The takedown lever includes an ejector head and a finger. The finger is engageable with a sear when the takedown lever is rotated by depressing the ejector head through the ejection port when the slide is out of battery. This rotates the sear so that the slide may be removed by sliding it toward the muzzle end of the pistol.

A chassis includes an internal portion which corresponds to a rifle action of a first type. The chassis further includes an external portion which corresponds with a rifle stock. The chassis is attached to the rifle action of the first type and to rifle stock.