Abstract: A muzzle brake for reducing the recoil associated with firing a weapon comprising a plurality of gas vents, a plurality of projections extending outward from the muzzle brake, and an interiorly depressed annular nose surrounding the projectile's exit point, for capturing, redirecting, and/or creating turbulence in propellant gases generated from firing the weapon.

Abstract: The present disclosure provides a buffer kit or assembly for an AR-15, M16, M4 carbine, SR-25, AR-10 and LR-308 type firearm with enhanced fatigue resistance. The buffer assembly includes a weighted buffer, a spring, and a buffer tube. The spring is helically shaped and is formed from multiple wire strands. The stranded wire spring has a greater nominal wire diameter, in comparison to prior art single wire springs, and thus the stranded wire spring itself has a smaller internal diameter. The shoulder of the weighted buffer is provided with a reduced diameter to accommodate the smaller internal diameter of the stranded wire spring.

Abstract: A mount for firearm assembly and adjustment includes a firearm engagement portion having a hollow body with at least one recess for receiving a firearm buffer tube therein, and a support member configured to be secured to a support.

Abstract: In general terms, this disclosure is directed to a trigger mechanism with a mode selector element that is placeable in a safety mode, a semi-automatic fire mode, and a momentary automatic fire mode. In one possible configuration and by non-limiting example, the mode selector element includes a selector block and a handle portion extending from the selector block to allow the selector block to be rotated between the different modes. The mode selector element is configured such that the selector block can be indexed into the safety mode and the fire mode. The mode selector element is additionally configured such that the selector mode is spring biased to automatically rotate from the momentary automatic fire mode to the fire mode when the handle portion is not constrained by a force, such as when an operator releases the handle portion.

Abstract: A barrel installation assembly is used for easily installing a barrel onto a receiver of a firearm with proper torque and alignment. The barrel installation assembly includes a barrel nut, barrel nut spacers, and a barrel installation tool. The barrel nut is configured to fasten the barrel to the receiver. The barrel nut spacers are configured to be interposed between the barrel nut and the receiver when the barrel is fastened thereto. The barrel installation tool includes a head portion configured to removably engage with the barrel nut, and a handle portion extending from the head portion.

Abstract: In general terms, this disclosure is directed to a trigger mechanism with a mode selector element that is placeable in a safety mode, a semi-automatic fire mode, and a momentary automatic fire mode. In one possible configuration and by non-limiting example, the mode selector element includes a selector block and a handle portion extending from the selector block to allow the selector block to be rotated between the different modes. The mode selector element is configured such that the selector block can be indexed into the safety mode and the fire mode. The mode selector element is additionally configured such that the selector mode is spring biased to automatically rotate from the momentary automatic fire mode to the fire mode when the handle portion is not constrained by a force, such as when an operator releases the handle portion.

Abstract: A sear mechanism for a firearm includes a trigger element having one or more contact surfaces on which one or more movable or pivotable components of the sear mechanism selectively contacts or slides. In some embodiments, the trigger element is made by producing an intermediate workpiece of the trigger element by a manufacturing process, and electric discharge machining the intermediate workpiece of the trigger element to provide the contact surfaces.