Abstract: Various examples of a tool-free dust cover for firearms are described. The dust cover is a monolithic piece having a cover plate, a first connection portion, and a second connection portion, with at least one of the first connection portion and the second connection portion being elastically deformable to allow the dust cover to be pivotably coupled to a receiver portion of the firearm. The first connection portion is received in a cavity of a first hinge knuckle on the receiver portion next to a first long side of an ejection port of the receiver portion. The second connection portion is received in a cavity of a second hinge knuckle on the receiver portion next to the first long side of the ejection port. When in an open position, the cover plate uncovers the ejection port. When in a closed position, the cover plate covers the ejection port.

Abstract: A bipod stability assembly is a magnetic device having mating magnets on a rifle and a sandbag or bipod. A user my quickly interchange either by removing the first stability support and connecting the second.

Abstract: A disconnector trigger bar safety for a semi-automatic pistol is provided and includes a trigger bar having a firing pin end having a sear surface and a cam surface. The trigger bar has an inside surface disposed adjacent to the cam surface. A disconnector is moveable from an inward position to an outward position and has a cam surface to receive the cam surface of a trigger bar. An inset portion is provided on the trigger bar at the firing pin end that has a bottom surface. A protuberance on the side of the disconnector is provided to mate with the inset portion of the trigger bar. The protuberance has a top surface matable to the bottom surface of the inset portion. Rearward movement of the trigger bar causes the cam surface of the trigger bar to slide against the cam surface of the disconnector to move the firing pin end of the trigger bar downwardly. The disconnector moves to provide clearance for the trigger bar to move upward.

Abstract: Trigger guard assemblies for firearms include a trigger guard movable between a closed positon; and an open position providing greater access to a trigger bow of the firearm. The trigger guard assemblies also include a post that engages the trigger guard, and is movable in relation to the trigger guard between a retracted position and an extended position. When in the retracted position, the post does not interfere with movement of the trigger guard between the open and closed positions. When in the extended position, the post interferes with movement of the trigger guard between the open and closed positions, and exerts a lateral force on the firearm to further secure the trigger guard to the firearm.

Abstract: A mounting device for the detachable mounting of a telescopic sight on a weapon consisting of a weapon-side base rail and a telescopic sight-side mounting rail connected thereto via at least one locking element wherein at least one clamping force acting perpendicularly to the surface of the two rails can be generated by actuating the locking element resulting in a positive and non-positive connection between the two rails wherein a clamping shaft of the locking element is held rotatably in the one rail and supports at least one wedge recess which, during rotating actuation of the locking element can be brought into non-positive engagement with a recess of a stay bolt which is arranged on the opposite rail, wherein the locking element during clamping or locking between the weapon-side base rail and the mounting rail mounted positively thereon, additionally generates a displacement force acting in the axial direction (longitudinal direction) of the two rails wherein further the stay bolt is mounted in a spring-

Abstract: The present disclosure is directed to a firearm magnifier. A firearm magnifier of the present disclosure is operationally configured for use with an optical sight of a firearm. A firearm magnifier of the present disclosure comprises a reticle operationally configured to range one or more target objects at one or more distances from the reticle.

Abstract: A mount for a firearm has a body having a first clamp configured to engage a first edge of the rail, a jaw movably connected to the body and having a second clamp opposed to the first clamp and operable with the respective clamps to engage respective opposed lateral edges of the rail, a spring biasing the jaw toward the body, and at least a portion of the spring being between the clamps. There may be a pushrod connected to a first one of the body and the jaw and slidably received by the other of the body and the jaw. The spring may be laterally positioned to one side of the pushrod. The spring may be a coil spring having a spring axis offset from a pushrod axis defined by the pushrod.

Abstract: A receiver and a method for manufacturing it are disclosed. The receiver contains a first material at least partially surrounded by a second material, wherein the first material has a first melting and the second material has a second melting point, wherein the first melting point is lower than the second melting point. The method disclosed teaches how to manufacture the receiver.

Abstract: A ratcheting magazine for a firearm includes a main body, a floor plate, and an insert disposed inside the main body. The insert includes a front column of supports, a rear column of supports, and a sliding column of supports. The sliding column of supports includes a plurality of positions relative to the insert such that the sliding column of supports moves linearly relative to the insert.

Abstract: Firearm trigger mechanisms with rotatable linkage members and associated systems and methods are disclosed herein. A firearm trigger assembly configured in accordance with embodiments of the present technology can include, for example, a trigger, first and second linkage members, and a sear. The first linkage member, second linkage member, and sear are arranged in an over-center configuration that securely locks the sear in a first position. Pulling on the trigger causes the trigger to rotate about a fixed pivot point and push on one of the two linkage members, forcing the linkage members and the sear out of the over-center configuration. The force from a striking mechanism forces the sear and the linkage members into a collapsed configuration, releasing the striking mechanism and firing the firearm. This two toggle configuration of the trigger assembly provides crisp and reliable release of the firearm.

Abstract: A movable position-limiting quick-release gun light, comprising a light main body, a bottom end of the light main body is fixedly connected with a support plate, and the left and right sides of which are slidable connected to the top of a base, the middle part of the fixing plate is fixedly connected with a tightening seat, the middle part of the right end of which is fixedly connected to the left end of the tightening rod, and the right end of which is rotatably connected with an tightening handle through a rotating shaft, the front and rear parts of the right end of the tightening seat are fixedly connected to the left end of the ejector rod. The structure of the gun light is simple, the maintenance and disassembly are easy, and the use is very convenient.

Abstract: A lower receiver that may be right hand or left hand configurable is provided. The lower receiver includes a static ejector that can be easily configured for right hand or left hand positions within the same lower receiver and a magazine button assembly having a left magazine button and a right magazine button that are operatively coupled together so that either magazine button can be pushed to release the magazine. This allows the gun builder to use this one lower receiver to build a right or left handed rifle.

Abstract: A trigger assembly for a firearm is disclosed wherein the firearm includes a receiver, a safety selector and a hammer. The trigger assembly includes a trigger having a pivot axis, a front hook which is constructed and arranged to move with trigger rotation, a rear hook which is cooperatively arranged with the front hook and a spring which is positioned between the front hook and the rear hook. The front hook and the trigger are constructed and arranged relative to the safety selector and relative to the hammer in order to allow the hammer to be recocked from an upright position with the safety selector in a “SAFE” position. This particular construction provides a trigger assembly which is constructed and arranged as a two-stage, drop-in trigger assembly which is compliant with the European Standard for an M4/M16 (AR) platform.

Abstract: According to one embodiment, a recoil pad includes a base member configured to be mounted to a buttstock of a gun, and an amorphous material configured to be shaped into at least a portion of a cushion member. The amorphous material has a first surface configured to be physically coupled to the base member, and a second surface that is configured to be shaped around a portion of a shoulder of a user such that the second surface has a shoulder facing contour that matches a contour of the portion of the shoulder.

Abstract: Various embodiments of optimized subsonic projectiles are provided. For example, one exemplary subsonic projectile can include an elliptical nose cone, a cylindrical body and a boattail with various design features that can be used in a subsonic ammunition cartridge where the subsonic projectile is stabile throughout at least a segment of a flight allowing for better accuracy, maintaining low drag, maximizing range and achieving desired performance while ensuring the projectile stays below the speed of sound and lowering a noise profile of projectile and a launcher firing the projectile.

Abstract: A riflescope mount assembly that corrects cant is provided. The riflescope mount comprises at least one indexing bar attachable to a riflescope, and a mounting bracket that is mountable or attachable to the riflescope. The mounting bracket may include at least one auto indexing mechanism and at least one mechanical indexing mechanism that engages the at least one indexing bar attached to the riflescope.

Abstract: Provided is a method of repairing a firearm noise suppressor that includes a baffle chamber unit and a removable identification band with identifying indicia thereon with material of an area of the band is affixed to the baffle chamber unit to prevent the removal of the band without a machining process to the selected area. The method includes machining the affixed area of the band to remove the affixed material, removing the band from the baffle chamber unit, repairing or preplacing the baffle chamber unit, reinstalling the band on the baffle chamber unit, and affixing a different area of the band to the baffle chamber unit to prevent the removal of the band without a machining process.

Abstract: A handguard grip assembly has a connector to be fixed to a barrel of a rifle, the barrel having a barrel axis, a grip having a grip axis and adapted to be held by a user of the rifle and a flexible joint connected between the connector and the grip for allowing the grip and grip axis to pivot to any angle with respect to the barrel axis.

Abstract: A quick-attach-and-detach mount for removably securing an accessory on a rail of a firearm comprises a clamp carried by a portion of the accessory. The clamp includes a pair of generally opposing surfaces. An opposing jaw is formed on one of the generally opposing surfaces of the clamp and is configured to engage an undercut on the rail. At least one movable jaw is secured in a recess in another of the generally opposing surfaces of the clamp in opposition to the opposing jaw and is configured to engage an undercut on an opposite side of the rail from the opposing jaw. A biasing member is disposed in the recess to urge the movable jaw into engagement with the undercut on the rail. A locking member may be at least partially disposed in the recess and selectively act upon the movable jaw to selectively secure the movable jaw in engagement with the rail.

Abstract: A forward brace assembly for a firearm includes a forward portion designed to interface with an operator's off hand and an aft panel extending rearward from the forward portion. At least a portion of the forward brace assembly is attached to an underside of a handguard of the firearm. The aft panel prevents the operator's off hand from wrapping around a rear side of the forward portion.