Abstract: A firearm sound suppressor and associated methods. The sound suppressor includes a distal end wall and a flash hider on the distal end wall for reducing flash at an outlet of the suppressor. The sound suppressor can include a core including gas baffling integrally formed with the distal end wall and the flash hider. The flash hider can include a plurality of arms having slots therebetween and extending distally away from the distal end wall.

Abstract: A rotary ammunition magazine cooperates with a bolt catch to hold the bolt of a firearm out of battery in an open position after the last round has been fired. A cam mounted on the rotor of the magazine actuates a movable body on the magazine housing as the cam rotates to feed ammunition to the action. The body moves to an extended position and engages a bolt catch pivotably mounted in the firearm receiver. The bolt catch is pivoted by the body into a position where it will engage the bolt and prevent it from returning to battery after the last round has been fired.

Abstract: A firearm suppressor includes a muzzle mount; blast, intermediate and distal baffle cups; a distal end cap; and a shroud. The muzzle mount, baffle cups, and end cap thread together at threaded interfaces. Each baffle cup has an externally threaded proximal segment threadably received in the proximally adjacent component. The distal baffle cup has an externally threaded distal segment received in the end cap. The components are shaped and arranged to form sealed interfaces upstream of the threaded interfaces along the flow path of gas through the suppressor. The baffle cups include baffle walls defining chambers sized and arranged to limit first round pop. The baffle walls define vent passages extending along axes oriented at skew angles with respect to the axes of the baffle cups. A distal baffle cup includes an annular recess for reducing the weight of the suppressor adjacent the distal end.

Abstract: A disconnector for pistols having a trigger bar uses a body rotatably mounted on the pistol frame to permit or prevent engagement between the trigger bar and the pistol's sear. The body has a plurality of surfaces, one of which engages the trigger bar and pivots it between a safe orientation, out of alignment with the pistol's sear, and a fire orientation, aligned with the sear, when the body rotates between a safe position and a fire position. Another body surface engages the slide, the body being rotated into the safe position when the slide is out of battery. Another surface engages a grip safety and another surface engages a manual safety. Both safeties effect rotation of the body between the safe and fire positions when they are actuated.

Abstract: A quick connect for a pistol suppressor includes a housing having a first end, a second end, and a central bore with an upper portion, a lower portion, and an internal shoulder separating the upper and lower portions. A piston is within the central bore of the housing. The piston includes a piston shoulder that creates an upper recess within a central bore of the piston. A ring having a locking profile is selectively connected to the second end of the piston between the housing and the piston and a spring is positioned around an exterior of the piston. A wave spring is positioned in the upper recess of the piston adjacent the piston shoulder and a washer. A cap with a central opening and an internal locking profile is connected to the piston with the wave spring biasing the washer towards the locking profile.

Abstract: A trigger mechanism has a first trigger which engages a sear connector and a second trigger, pivotably mounted on the first trigger, which supports the sear connector. The sear connector supports a sear, which holds a firing pin in the cocked position via a cocking piece. To discharge the firearm both triggers must be pulled. A safety lever has a hook which engages the second trigger and a projection which engages a spur on the first trigger when the lever is in the safe position.

Abstract: A captive recoil spring assembly includes a guide rod surrounded by a coil spring. The spring is captured between a base at one end of the guide rod, and a body at its opposite end. The body is shaped to engage the spring at one or more sectors, leaving one or more remaining sectors free to engage the slide. Use of such a body permits a round wire spring to be used without the need for close dimensional tolerances on the engaging parts.

Abstract: A firearm suppressor includes a muzzle mount; blast, intermediate and distal baffle cups; a distal end cap; and a shroud. The muzzle mount, baffle cups, and end cap thread together at threaded interfaces. Each baffle cup has an externally threaded proximal segment threadably received in the proximally adjacent component. The distal baffle cup has an externally threaded distal segment received in the end cap. The components are shaped and arranged to form sealed interfaces upstream of the threaded interfaces along the flow path of gas through the suppressor. The baffle cups include baffle walls defining chambers sized and arranged to limit first round pop. The baffle walls define vent passages extending along axes oriented at skew angles with respect to the axes of the baffle cups. A distal baffle cup includes an annular recess for reducing the weight of the suppressor adjacent the distal end.

Abstract: A pistol has a bolt with a surface that contacts the cartridge in the magazine to next be chambered. The bolt is mounted within the slide. As the bolt moves with the slide out of battery the surface exerts a force on the cartridge in the direction of motion of the slide. The force counteracts inertial forces on the cartridge imposed by recoil of the pistol.

Abstract: A charging handle for a rifle has a grip that is pivotable and slidable on a base connected to a bolt carrier through a rod. A latch mounted on the base engages the receiver of the rifle. The latch is pivotable on the base to release the charging handle from the receiver when cocking the bolt carrier. Pivoting of the latch is effected through a cam attached to the grip. The cam contacts a cam follower on the latch. Both pivoting and sliding motion of the grip relative to the base pivot the latch to effect release of the charging handle from the receiver.

Abstract: A trigger mechanism has a trigger block pivotably mounted on a trigger. The trigger block has a face surface that engages an actuation surface on a plunger which is movable along a line of action. The plunger has a stop surface engageable with a contact surface on the trigger. Pivoting of the trigger is prevented when the stop and contact surfaces are engaged. The plunger is spring biased to maintain the stop surface engaged with the contact surface. Pivoting of the trigger block moves the face surface against the actuation surface, which moves the plunger along its line of action. Motion of the plunger disengages the stop surface from the contact surface allowing the trigger to pivot and discharge the firearm.

Abstract: A rotary ammunition magazine for a rifle has a follower that is spring biased and rotates about an axis to move cartridges for feeding to the rifle's chamber. The follower has a rib and/or a projection on a surface facing the cartridges. The rib engages the last cartridge in a stack and directs the force from the follower in the direction of movement of the cartridges within the magazine. The projection engages the extractor groove in the last cartridge to prevent it from moving under inertial forces caused by recoil. The rib engages and prevents the last cartridge from moving down the follower. The projection and rib prevent bolt override malfunctions.

Abstract: A trigger mechanism for a firearm includes a sear which interacts with a trigger. The sear and trigger are held in contact by a sear block. The sear block has dogs which engage respective locking surfaces on the sear and trigger. Pivoting motion of the sear block disengages the dogs from the trigger and sear and allows the trigger to pivot and release the sear to discharge the firearm. When the dogs are engaged with the sear and trigger the resistance to inadvertent discharge due to inertial loads imposed on the mechanism when the firearm is dropped is increased.