A breechblock assembly includes a breechblock configured to reciprocate along a top of the firearm receiver between a recoil position and a battery position. An actuator is coupled to the breechblock and is configured to move between first and second positions. A lever on the breechblock in contact with the actuator is movable between a blocking position and a non-blocking position. For example, the lever is generally oriented along the central axis and extends rearward beyond a proximal face of the breechblock. When the actuator is in the first position, the lever is in the blocking position. When the actuator is in the second position the lever is in the non-blocking position. When assembled in a firearm, an end of the lever is positioned to block the hammer from striking the firing pin when the breechblock is out of battery by more than a predefined distance.

A breechblock assembly includes a breechblock configured to reciprocate along a top of the firearm receiver between a recoil position and a battery position. An actuator is coupled to the breechblock and is configured to move between first and second positions. A lever on the breechblock in contact with the actuator is movable between a blocking position and a non-blocking position. For example, the lever is generally oriented along the central axis and extends rearward beyond a proximal face of the breechblock. When the actuator is in the first position, the lever is in the blocking position. When the actuator is in the second position the lever is in the non-blocking position. When assembled in a firearm, an end of the lever is positioned to block the hammer from striking the firing pin when the breechblock is out of battery by more than a predefined distance.

A locking block is adapted to be mounted in a gun. The gun has a bias spring having a bias spring arm. The locking block includes two side bodies and a connecting body. The connecting body is connected between the two side bodies and has a bottom surface. The connecting body is formed with at least one positioning groove recessed upward from the bottom surface for catching the bias spring arm of the bias spring.

A locking block is adapted to be mounted in a gun. The gun has a bias spring having a bias spring arm. The locking block includes two side bodies and a connecting body. The connecting body is connected between the two side bodies and has a bottom surface. The connecting body is formed with at least one positioning groove recessed upward from the bottom surface for catching the bias spring arm of the bias spring.

A breechblock assembly includes a breechblock configured to reciprocate along a top of the firearm receiver between a recoil position and a battery position. An actuator is coupled to the breechblock and is configured to move between first and second positions. A lever on the breechblock in contact with the actuator is movable between a blocking position and a non-blocking position. For example, the lever is generally oriented along the central axis and extends rearward beyond a proximal face of the breechblock. When the actuator is in the first position, the lever is in the blocking position. When the actuator is in the second position the lever is in the non-blocking position. When assembled in a firearm, an end of the lever is positioned to block the hammer from striking the firing pin when the breechblock is out of battery by more than a predefined distance.

A breechblock assembly includes a breechblock configured to reciprocate along a top of the firearm receiver between a recoil position and a battery position. An actuator is coupled to the breechblock and is configured to move between first and second positions. A lever on the breechblock in contact with the actuator is movable between a blocking position and a non-blocking position. For example, the lever is generally oriented along the central axis and extends rearward beyond a proximal face of the breechblock. When the actuator is in the first position, the lever is in the blocking position. When the actuator is in the second position the lever is in the non-blocking position. When assembled in a firearm, an end of the lever is positioned to block the hammer from striking the firing pin when the breechblock is out of battery by more than a predefined distance.

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. Dual-feed structure provides for both a magazine mode as well as a belt feed mode of operation.

A slide pull attachment for use on a slide of a semi-automatic pistol comprises a flexible, unitary sheet member having a longitudinal centerline and a lateral centerline, an adhesive material disposed on a rear surface of the sheet member for adhering the sheet member to a slide, and a contoured pull tab projecting upwardly from an upper surface of the sheet member. The contoured pull tab is located rearward of the lateral centerline and adjacent a first side edge of the sheet member. The attachment further comprises a plurality of spaced, parallel relief grooves extending longitudinally in the upper surface of the sheet member between a rearward edge of the sheet member and a forward edge thereof, and a plurality of spaced, parallel relief grooves extending laterally in the upper surface of the sheet member from a second side edge of the sheet member towards the first side edge.

A slide pull attachment for use on a slide of a semi-automatic pistol comprises a flexible, unitary sheet member having a longitudinal centerline and a lateral centerline, an adhesive material disposed on a rear surface of the sheet member for adhering the sheet member to a slide, and a contoured pull tab projecting upwardly from an upper surface of the sheet member. The contoured pull tab is located rearward of the lateral centerline and adjacent a first side edge of the sheet member. The attachment further comprises a plurality of spaced, parallel relief grooves extending longitudinally in the upper surface of the sheet member between a rearward edge of the sheet member and a forward edge thereof, and a plurality of spaced, parallel relief grooves extending laterally in the upper surface of the sheet member from a second side edge of the sheet member towards the first side edge.

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. Dual-feed structure provides for both a magazine mode as well as a belt feed mode of operation.