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.

A firearm for firing cased telescoped (CT) ammunition cartridges that includes a split chamber configured to fully support a CT cartridge when it is fired, and that includes i) a dynamic rear chamber portion defining a pocket in a face of a bolt, and ii) a static front chamber portion that is integral to the barrel and separate from the bolt. A cartridge extraction mechanism engages the CT cartridge prior to the CT cartridge being fired, and holds the CT cartridge in the pocket in the bolt face as the bolt moves rearward to pull the CT cartridge out of the static front chamber portion and into an ejection position. An ejector is operable to eject the CT cartridge from the pocket in the face of the bolt when the CT cartridge reaches the ejection position.

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.

A handgun which vertically displaces a magazine and cocks and snaps a hammer so as to fire a bullet out of the magazine once a trigger handle has been displaced from a first position to a second position. The handgun is made up of a body, a trigger handle, a barrel, and a magazine. A magazine lift mechanism is disposed in the body and functions to vertically displace the magazine upon displacement of the trigger handle. A firing mechanism is disposed in the body, trigger handle, and barrel of the handgun and functions to fire bullets in the magazine upon displacement of the trigger handle. A trigger force mechanism is disposed in the trigger handle and provides a force against which the trigger handle is displaced. The trigger force mechanism returns the trigger handle to the first position when the trigger handle is released from the second position.

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.