Various examples of a tool-free dust cover for firearms are described. The dust cover is a monolithic piece having a cover plate, a first connection portion, and a second connection portion, with at least one of the first connection portion and the second connection portion being elastically deformable to allow the dust cover to be pivotably coupled to a receiver portion of the firearm. The first connection portion is received in a cavity of a first hinge knuckle on the receiver portion next to a first long side of an ejection port of the receiver portion. The second connection portion is received in a cavity of a second hinge knuckle on the receiver portion next to the first long side of the ejection port. When in an open position, the cover plate uncovers the ejection port. When in a closed position, the cover plate covers the ejection port.

Various examples of a tool-free dust cover for firearms are described. The dust cover is a monolithic piece having a cover plate, a first connection portion, and a second connection portion, with at least one of the first connection portion and the second connection portion being elastically deformable to allow the dust cover to be pivotably coupled to a receiver portion of the firearm. The first connection portion is received in a cavity of a first hinge knuckle on the receiver portion next to a first long side of an ejection port of the receiver portion. The second connection portion is received in a cavity of a second hinge knuckle on the receiver portion next to the first long side of the ejection port. When in an open position, the cover plate uncovers the ejection port. When in a closed position, the cover plate covers the ejection port.

A modular firearm grip assembly has a frame defined by a front grip strap and a rear grip strap. The front grip strap defines a front lateral attachment point and rear lateral attachment point, and the rear grip strap has a first attachment coupling interface. A grip extension defined by a front extension strap and a rear extension strap is coupled to the frame at the respective one of the front lateral attachment point and the rear lateral attachment point thereof. The grip extension includes a second attachment coupling interface engaged to the first attachment coupling interface of the frame.

A dual use shell casing for use in a 9 mm firearm and for use in 9 mm magazines includes an upper portion, a lower portion, an internal cavity extending between the upper portion and the lower portion, the internal cavity configured to receive gunpowder and a projectile, and a tapered shoulder disposed at the upper portion and transitioning into a reduced diameter neck portion, the reduced diameter neck portion having an inner diameter equal to 0.313 inches. The tapered shoulder is configured to abut an internal shoulder within a barrel chamber of the 9 mm firearm.

A dual use shell casing for use in a 9 mm firearm and for use in 9 mm magazines includes an upper portion, a lower portion, an internal cavity extending between the upper portion and the lower portion, the internal cavity configured to receive gunpowder and a projectile, and a tapered shoulder disposed at the upper portion and transitioning into a reduced diameter neck portion, the reduced diameter neck portion having an inner diameter equal to 0.313 inches. The tapered shoulder is configured to abut an internal shoulder within a barrel chamber of the 9 mm firearm.

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 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 rust prevention device for guns which includes a mounting case with a mounting space and a bullet-shaped rust prevention plug mounted in the mounting space is revealed. An outer diameter of the rust prevention plug is sized to fit in a bore or a magazine of the gun. A main body of the rust prevention plug which is a molded block made of porous adsorbents or volatile corrosion inhibitors (VCIs) is exposed outside the mounting case. Thereby the rust prevention device is loaded into the bore or magazine like a cartridge and the main body of the rust prevention plug is exposed to increase surface area in contact with air in the gun. The rust prevention plug has more contact with metal parts in the gun due to diffusion in air. Therefore, the gun is better protected against rust.

A firearm barrel and internals saver keeps debris, foreign objects, and free air out of a firearm. The trigger cover may be clipped on to the trigger guard of a firearm. An elastic connective member has a barrel cover at the opposite end, which fits over and covers the opening of the barrel of the firearm. Both the firearm barrel cover and internals saver are quickly removable for use in the field.

A holster for receiving and withdrawing a handgun having two active restraints and a dust cover. The holster further has a lockout button assembly comprising an elongated member having a lockout button portion on a proximal end and a blocking portion on a distal end, wherein the lockout button assembly is configured to be slidingly mounted to a housing for manual movement of the lockout button assembly between a protrusion portion blocking position and a protrusion portion non-blocking position, wherein the blocking portion is configured to block rotation of the protrusion portion and the thumb button when in the blocking position, and wherein the blocking portion is configured to allow rotation of the protrusion portion and the thumb button when in the non-blocking position.