Abstract: A pistol frame can include a trigger mechanism recess, an upper rim extending about the trigger mechanism recess, a rear insert recess within the trigger mechanism recess, a left rear rail insert, and a right rear rail insert. The left rear rail insert can include an upper portion including a left rail and a lower portion including a first pin aperture. The right rear rail insert can include an upper portion including a right rail and a lower portion including a second pin aperture. The pistol frame can include a first and second pin hole aligned with the trigger mechanism recess and a pin that can extend through the first and second pin holes and through the first and second pin apertures.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: An adaptor for mounting the firearm accessory to a barrel of a firearm. The adaptor may include an indexing component that aligns the accessory into a desired orientation. The adaptor may include a threaded interconnection as well as a spring biased interconnection.

Abstract: An adaptor for mounting the firearm accessory to a barrel of a firearm. The adaptor may include an indexing component that aligns the accessory into a desired orientation. The adaptor may include a threaded interconnection as well as a spring biased interconnection.

Abstract: An adaptor for mounting the firearm accessory to a barrel of a firearm. The adaptor may include an indexing component that aligns the accessory into a desired orientation. The adaptor may include a threaded interconnection as well as a spring biased interconnection.

Abstract: An adaptor for mounting the firearm accessory to a barrel of a firearm. The adaptor may include an indexing component that aligns the accessory into a desired orientation. The adaptor may include a threaded interconnection as well as a spring biased interconnection.

Abstract: A magazine extension for attachment to an open bottom of a magazine tube having a pair of sidewalls, a pair of end walls, and a flange on at least each of the sidewalls at the bottom. The extension includes an extension body having open first and second ends and forward and rear walls. The first open end of the extension body is slidably attachable to the sidewall flanges at the bottom end of a magazine tube. A bottom closure member is removably slidably attached to the open second end of the body and movable between open and closed positions. A latch member is slidably attached to a wall of the extension body to move toward and away from the magazine tube and open ends of the extension body. The latch member releasably secures the extension body to the magazine tube when moved toward the magazine tube and first open end of the extension body.

Abstract: A magazine extension for attachment to an open bottom of a magazine tube having a pair of sidewalls, a pair of end walls, and a flange on at least each of the sidewalls at the bottom. The extension includes an extension body having open first and second ends and forward and rear walls. The first open end of the extension body is slidably attachable to the sidewall flanges at the bottom end of a magazine tube. A bottom closure member is removably slidably attached to the open second end of the body and movable between open and closed positions. A latch member is slidably attached to a wall of the extension body to move toward and away from the magazine tube and open ends of the extension body. The latch member releasably secures the extension body to the magazine tube when moved toward the magazine tube and first open end of the extension body.