A weapon for firing cased telescoped (CT) ammunition includes a barrel, a chamber member and a carrier assembly. The chamber member defines a chamber for a CT round for firing, and translates between a firing position aligned with the barrel and an ejection/loading position. The chamber member is spring-biased toward the firing position. The carrier assembly carries the firing pin and (1) performs a recoil in which a carrier and rammer move rearward from a battery position to bring the next CT round into a ramming position and to move the chamber member from the firing position to the ejection/loading position, and (2) performs a counter-recoil to return to the battery position and cause the rammer to push the next CT round into the chamber. The chamber member is released for biased return to the firing position for a next firing cycle.

An ergonomic self-cleaning base plate, which has an exterior face with a perimeter edge. Extending from the perimeter edge is a forward face and an aft section. The magazine floor plate further has an interior face having at least one channel that extends from the forward face to the aft section. Debris accumulated within the at least one channel exits therefrom via the aft section. The forward face extends to an edge and has at least one channel hole. The at least one channel hole aligns with a respective at least one channel. The debris accumulated within the at least one channel also exits from the at least one channel hole.

An ergonomic self-cleaning base plate, which has an exterior face with a perimeter edge. Extending from the perimeter edge is a forward face and an aft section. The magazine floor plate further has an interior face having at least one channel that extends from the forward face to the aft section. Debris accumulated within the at least one channel exits therefrom via the aft section. The forward face extends to an edge and has at least one channel hole. The at least one channel hole aligns with a respective at least one channel. The debris accumulated within the at least one channel also exits from the at least one channel hole.

Pistols have a body having a grip, the body having a trigger guard, the body having an upper slide interface surface defining a slide interface plane, the body having a first mounting facility at a forward end below the slide interface plane and at a level above at least a portion of the trigger guard, a dust cover having a rear end having a second mounting facility adapted to removably dock with the first mounting facility in an attached position, the dust cover defining an upper surface in the slide interface plane when the dust cover is in the attached position, and the first mounting facility and second mounting facility comprising a sliding interface. The sliding interface may be a dovetail feature.

A magazine for storing cased telescoped (CT) cartridges. The magazine includes vertically extending side-wall ribs that project inwards into a loading channel. The side-wall ribs are positioned in alignment with a circumferential groove in each CT cartridge. The side-wall ribs prevent a backwards oriented CT cartridge from being pushed from the loading position through the loading channel into a body of the magazine. A moveable lip at the top of the magazine may move out of the way when the magazine is attached to a firearm, to allow the CT cartridge located in the loading position to be fed vertically out of the top of magazine. Each CT cartridge may include a thermal protective insert that provides thermal insulation from heat emanating from a barrel of a firearm when the CT cartridge is located in a chamber of the firearm.

A gun magazine automatic changing apparatus is disclosed. According to an embodiment, a gun magazine automatic changing apparatus is combined with a gun having a barrel, a barrel cover, a receiver connected to the rear end of the barrel, and a magazine chamber. The gun magazine automatic changing apparatus includes: a multi-magazine mount including a plurality of clips each having a holder fitted on a magazine and connectors disposed on both sides of the holder and having fitting units at both ends; and a loading guide including an actuating bar pushing down the connectors of the multi-magazine mount and a holder formed at an end of the actuator bar to be held by a user and disposed under the barrel cover to move forward/backward.

A gun magazine automatic changing apparatus is disclosed. According to an embodiment, a gun magazine automatic changing apparatus is combined with a gun having a barrel, a barrel cover, a receiver connected to the rear end of the barrel, and a magazine chamber. The gun magazine automatic changing apparatus includes: a multi-magazine mount including a plurality of clips each having a holder fitted on a magazine and connectors disposed on both sides of the holder and having fitting units at both ends; and a loading guide including an actuating bar pushing down the connectors of the multi-magazine mount and a holder formed at an end of the actuator bar to be held by a user and disposed under the barrel cover to move forward/backward.

The present disclosure presents a barrel assembly for a firearm. The barrel assembly includes a barrel having an internal bore and an external surface, and a recoil spring lug affixed to an outside surface of the barrel. The barrel assembly also includes a slide moveably mounted relative to the barrel, and a recoil spring biased on the recoil spring lug and the slide.

The present disclosure presents a barrel assembly for a firearm. The barrel assembly includes a barrel having an internal bore and an external surface, and a recoil spring lug affixed to an outside surface of the barrel. The barrel assembly also includes a slide moveably mounted relative to the barrel, and a recoil spring biased on the recoil spring lug and the slide.

A weapon for firing cased telescoped (CT) ammunition includes a barrel. a chamber cavity aligned with the barrel, and a translating chamber member defining a chamber for holding a CT round for firing. The chamber member moves between a firing position in the chamber cavity and an ejection/loading position for ejecting a spent CT round and receiving a next CT round. A breech member closes a rear end of the chamber. A carrier performs a counter-recoil operation in which (1) the chamber member is moved from the ejection/loading position to the firing position with the next CT round therein, and (2) the breech is urged into a closed position against the next CT round in the chamber to remove headspace before the next CT round is fired from the weapon.