761results about "Breech mechanisms" patented technology

The present invention is a modular firearm lower receiver assembly for rapid conversion of conventionally configured modular firearms to a bullpup configuration and the method of assembly thereof. The preferred embodiment of the present invention is intended for designed use with modular firearms in the family AR-15 Type Firearms and enables a rapid conversion of a wide array of conventionally configured AR-15 Type Firearm to and a bullpup configuration. Such rapid conversion, which can generally be performed in a matter of seconds without any tools, is accomplished by decoupling and detaching the two captured receiver pins on the lower receiver of the conventionally configured AR-15 Type Firearm, removing the upper receiver assembly therefrom, and recoupling such upper receiver assembly to the present invention using two identically located receiver pins on the present invention. The present invention is universally applicable to AR-15 Type firearms of several different calibers and having an array of differences with respect to the lower receiver, upper receiver, handguard, bolt carrier group, or gas systems employed therein.

Present embodiments relate to a modular firearm. More specifically but without limitation, present embodiments relate to a modular firearm, for example semi-automatic rifle, with various modules that provide differing functions to a semi-automatic or automatic rifle. Some of the functions include, but are not limited to, connector for ambidextrous stock folding, interchangeable magwell for changing of firearm caliber, a barrel module with evacuation chamber, and ambidextrous charging handle.

An upper receiver assembly of a firearm is disclosed. The upper receiver assembly contains a barrel, an extension block removably coupled with the barrel, an upper receiver removably coupled with the extension block, a handguard mounting block removably coupled with the barrel, and a handguard removably coupled with the handguard mounting block.

An apparatus and methods are provided for a cam race for improving the longevity of an upper receiver of a direct gas operated firearm. The cam race provides a hardened slide face and a corner surface for a cam pin comprising a bolt carrier group of the firearm. The cam race is configured to be secured into a window disposed in the upper receiver. The window is surrounded by a counterbored area that receives a back plate of the cam race. The counterbored area and the thickness of the back plate cooperate such that the corner surface and the slide face are positioned to receive the cam pin during reciprocal movement of a bolt carrier group within the upper receiver. The cam race is retained in the upper receiver by fasteners that are tightened into threaded holes in the counterbored area.

Provided is a modular handgun or a grip module for a modular handgun having a separable fire control unit frame. The grip module includes a main grip module portion configured with a cavity configured to receive at least a portion of the fire control unit frame and a handgrip portion configured to receive an ammunition magazine. A secondary grip module portion is attachable to the main portion and has a rearward end configured with at least one projection configured to engage with a recess at a forward end of the fire control unit frame.

Various embodiments are directed to ambidextrous firearm controls, including an ambidextrous bolt control assembly and / or ambidextrous magazine release and associated methods. The ambidextrous bolt control assembly may include a bolt catch configured to hingedly connect to a firearm to rotate between a disengaged position and an engaged position, the bolt catch may include a first bolt catch engagement button operable from a first side of the firearm and a first bolt catch release button operable from the first side of the firearm; an ambidextrous bolt catch engagement button operable from a second side of the firearm; and an ambidextrous bolt catch release button operable from the second side of the firearm; wherein the ambidextrous bolt catch engagement button and the ambidextrous bolt catch release button may each be separately movable relative to the firearm. The ambidextrous bolt catch assembly may further include an ambidextrous magazine release assembly.

A grip module system for a handgun or other firearm may include a lower receiver, a pistol grip affixed to the lower receiver, a buffer tube attachment point affixed to a rear portion of the lower receiver, and an accessory rail removably attached to a top of the buffer tube attachment point. The grip module system may be configured to accept and engage the firing components of various semi-automatic and automatic pistols or rifles.

A bolt action firearm has an ejector element movable between a forward position in which a portion of the ejector element protrudes from the bolt face and a rearward position rear of the forward position, an ejector restraint element operable in a restraining position to restrain the ejector element to the rearward position and in a release position to enable movement of the ejector element from the rearward position to the forward position, an actuator movable between a first position and a second position such that seating a cartridge case head in an aligned position motivates the actuator from the first position to the second position, and a linkage connecting the actuator to the ejector restraint element and operable in response to movement of the actuator from the first position to the second position to enable movement of the ejector element from the rearward position to the forward position.

An improved AR platform firearm includes modular brass deflectors and brass catches; sleeved takedown and pivot pinholes; a cam latch device for a secure upper / lower receiver connection; a two-piece upper receiver; a taper-fit barrel system; a barrel alignment system using a barrel alignment washer; a charging handle that positively engages with the bolt carrier; a charging handle retention system using a spring detent; a bolt carrier with rear wall to absorb shear force on the gas key or anvil; a leak-proof gas system using a straight gas tube, ferrule and threaded connection with the gas block; a gas block stop notch that mates with a gas block key; a gas block jam nut for holding the gas block in place; an interchangeable gas system; an expansion chamber; a handguard with adjustable weights; a handguard lock-up mechanism; a handguard extender; and a sloped Picatinny rail for extending scope utilization.

A slide for a firearm includes a top surface and an optical sight mounting surface recessed into the top surface of the slide. At least one pin opening is defined through a portion of the optical sight mounting surface and is configured to receive a pin for attaching an optical sight to the slide. At least one sight attachment opening is defined through the optical sight mounting surface to serve as another connection point for the optical sight. The pin opening and the sight attachment opening allow the optical sight to be attached directly to the slide of the firearm.

A handgun trigger has a trigger body configured for pivotable or rotatable movement when installed in a handgun. A trigger shoe is removably attached or attachable to the trigger body and defines a user interface for firing the handgun. The trigger shoe can be made of polymeric material and can be attached to the trigger body using a snap fit. For example, the trigger shoe snaps over rear-facing surfaces of the trigger body when installed. Also disclosed is a takedown lever assembly for a semiautomatic handgun, where the takedown actuation lever operable between a firing position and a takedown position. In the takedown position the takedown actuation lever permits removal of the slide from the frame. In the takedown position the trigger is blocked from rotating to the pulled trigger position.

The present invention describes a fixation system for the backstrap of pistol grips, preferably micro-compact pistols. The present invention aims to promote better ergonomics for different users of the same pistol. As each person has different hand dimensions, it is not possible to develop a grip geometry that ensures an ideal hold for everyone, thus, the present invention describes a system that allows the interchangeability of backstraps of different sizes, all of which can be fitted to the pistol's grip. To attach the backstrap to the grip, a housing and a tab equipped with at least one through-hole are designed on the grip and a protrusion is arranged on the backstrap, which fits into said housing, and holes for a connecting element to be inserted and held in the holes and the through-hole.

A receiver assembly for a handgun. The receiver assembly includes a receiver having a magazine well, a locking device having a locking lever for actuating the locking device, a control block accommodated in the receiver, a trigger pivotable in the receiver and about a trigger axis, a sear bar coupled to the trigger, a locking bar having a guide lug, and a lowering component accommodated in the control block, which has a bar guide slot formed therein. The sear bar extends to the control block and includes a guide bracket. The locking bar interacts with the locking device. The lowering component is displaceable for removing the slide assembly from the receiver assembly. The lowering component includes a control window and a guide link. The guide bracket is guided in the control window. The guide lug protrudes into the guide link and through a bar guide slot of the control block.

Apparatuses, systems, and methods are disclosed for use in or with firearms. A firearm receiver includes an elongated channel machined or 3D printed from a metallic material, and has a front end and a rear end. The firearm also includes a front trunnion having a rear portion coupled to the front end of the elongated channel and having a front portion configured to couple to a handguard. Also includes is a rear trunnion coupled to the rear end and configured to receive an accessory adapter.

A trigger assembly has a trigger rotatable about a trigger axis of rotation between a resting position and a pulled position, where the trigger has a trigger shoe and a trigger body. A sear has a catch surface, is located forward of the trigger, and is rotatable about a sear axis of rotation between an engaged position and a disengaged position. A trigger bar links the trigger to the sear such that moving the trigger from the resting position to the pulled position causes the sear to rotate from the engaged position to the disengaged position, or vice versa. The trigger assembly can be housed in a lower receiver compatible with an upper receiver of an autoloading firearm.

Lever action firearms having a linkage assembly for pivotally connecting its action lever to its bolt carrier assembly and associated methods are disclosed. The lever action firearm includes a bolt carrier assembly received in an upper frame and operable to reciprocate between an open position and a closed position. The bolt carrier assembly includes a first pivot. A lower frame defines a magazine well configured to removably receive a box magazine. The lever action firearm includes an action lever movable between a retracted position and an extended position. The action lever includes second and third pivots. The action lever is pivotally connected to the lower frame at the second pivot. The lever action firearm also includes a linkage assembly is pivotally connected to the action lever at the third pivot, wherein the linkage assembly is pivotally connected to the bolt carrier assembly at the first pivot.

A grip module system for a handgun or other firearm may include a lower receiver, a pistol grip affixed to the lower receiver, a buffer tube attachment point affixed to a rear portion of the lower receiver, and an accessory rail removably attached to a top of the buffer tube attachment point. The grip module system may be configured to accept and engage the firing components of various semi-automatic and automatic pistols or rifles.

An automatic circulation shooting mechanism includes a gun body assembly, a gun barrel assembly, a bolt assembly, a recoil spring assembly, a triggering assembly, and a cartridge feeding assembly. Regarding the gun body assembly, a barrel fixing cap can separate from a barrel frame, so the gun barrel assembly mounted in the barrel frame can be replaced. The gun barrel assembly includes two barrel spring fixing seats disposed on a barrel, a barrel spring therebetween and a barrel extension. The barrel extension and a breech bolt of the bolt assembly are engaged for locking while shooting to allow the barrel and the breech bolt to recoil together by a linear freedom motion and affect the barrel spring, a bolt spring of the bolt assembly, and the recoil spring assembly for absorbing, storing, and releasing energy, thereby buffering recoil force of the shooting efficiently and attaining an automatic circulation shooting effect.

An upper receiver assembly for a firearm includes an upper receiver, an equipment rail, and an equipment rail key. The equipment rail key couples to the upper receiver with a portion of the equipment rail between the equipment rail key and the upper receiver to secure the equipment rail to the upper receiver. The equipment rail and equipment rail key cooperate to define a cam interface. The cam interface is configured to cause the equipment rail to be drawn against the upper receiver when the equipment rail key is secured against the upper receiver.

A modular adapter for a firearm receiver that has a threaded socket, such as an AR-platform rifle, has a receiver surface with a threaded plug that is rotatable and configured to engage the threaded socket of the firearm receiver, a distal surface that provides a means to attach an accessory, e.g., a portion of MIL-STD 1913 accessory mounting rail, or function as an end cap, and a knob-driven mechanism, i.e., a mechanism that a hand could operate to cause the threaded plug to rotate and thereby engage the receiver, positioned between the receiver surface and the distal surface, and connected to and able to rotate the threaded plug.

An upper receiver and lower receiver assembly for a firearm. The upper receiver and lower receiver assembly comprises an upper receiver. The upper receiver comprises a body having a rearward end and a first engagement surface proximate to the rearward end. A lower receiver comprises a housing configured to couple with the upper receiver. The housing has a rearward end and a second engagement surface proximate to the rearward end. The second engagement surface defines a recess adapted to receive the first engagement surface to provide an interlocking relationship between the upper and lower receivers. A firearm comprising the upper receiver and lower receiver assembly and a method of assembling the upper receiver and lower receiver assembly are disclosed.

The present disclosure presents a modular bolt action rifle system with bearings having an upper receiver assembly housing a barrel, a lower receiver assembly comprising an AR-style fire control system and a magazine well, a bolt carrier group assembly including a bolt carrier, top roller bearings and side roller bearings, and a handguard assembly, wherein the lower receiver assembly and its AR-style fire control and magazine well are releasably attached to the upper receiver, and prior to attachment of the barrel assembly the bolt carrier group assembly, consisting of the bolt carrier, bolt head, bolt charging handle, top roller bearings, and side roller bearings is inserted unto the upper receiver. An extension of the barrel assembly is releasably attached to the upper receiver. The barrel assembly is releasably secured by releasable attachment of the handguard assembly to a barrel extension receiver of the upper receiver assembly.

A control system for a firearm platform includes a chassis, a first bolt actuator rotatably received within the chassis having an upward position and a downward position and configured to engage a bolt when in the upward position. A second bolt actuator is rotatably received within the chassis and operatively engaged with the first bolt actuator to move in unison. A mag release is slidably received within a slot in the chassis and capable of sliding between left, center, and right positions. A mag catch is rotatably received within the chassis and in operable communication with the mag release such that the mag catch engages a magazine when the mag release is centered and disengages the magazine when the mag release is in the right or left position.

A firearm that includes an upper receiver, a barrel coupled to the upper receiver, and a lower receiver coupled to the upper receiver. The lower receiver may include a magazine well and an extension mount positioned forward of the magazine well. The firearm may further include a handguard and a means for coupling the handguard to the extension mount of the lower receiver.

A lower receiver includes a polymer main body having an outer surface and defining an interior. The interior of the polymer main body defines a first socket. A grip attachment body is receivable, along a first axis, into the first socket of the interior of the polymer main body. The grip attachment body includes a first threaded insert that is configured to receive a fastener for securing a grip to the lower receiver.

A firearm with ambidextrous bolt release mechanism includes a barrel and a bolt slideably mounted in the receiver for axial movement between forward closed breech position in battery with the barrel and a rearward open breech position. A recoil spring biases the bolt forward. A side-mounted bolt catch lever is configured and operable to selectively hold the bolt in the open breech position, and disengage the bolt to reclose the breech when manually actuated. A transversely movable actuator plunger allows a user to release the bolt from the side of the firearm opposite the bolt catch lever side. The plunger comprises an inclined camming surface which slideably engages a mating inclined camming ramp on the lever. Wedging action applied to the bolt catch lever by the plunger rotates the lever about its pivot axis to disengage and release the bolt.

A bolt carrier for gas impingement rifles equipped with a sound suppressor mechanism. The bolt carrier is configured to tortuously direct gas to a gas exhaust pocket and into a magazine well of the gas impingement rifle, thereby lessening ejection port light signature and significantly reducing the peak noise in the vicinity of the firer's ears. The gas exhaust pocket of the bolt carrier also improves the operator air quality and reduces bolt lug and chamber fouling associated with the other devices that have attempted to address the noise problem.

The invention is related with a new locked breech mechanism for firearms, mounted in the frame (21) which allows for shortening the distance between the barrel (2) axis and contact point of the grip (10). The Slide (7) / breech (16) and the barrel (2) locked together at the point of firing. The inertia pushes the slide (7) / breech (16) and the barrel (2) backwards together for a certain distance. The mechanism disengages after certain amount of travel. The breech block (6) and short stroke main spring (1) are located in the frame (21) of the firearm allowing for shortening the distance between the barrel (2) axis and contact point of the grip (10).

A handgun grip module assembly includes a grip module with a handgrip portion, a slide portion, and a trigger guard extending between and connecting the handgrip portion to the slide portion. The slide portion extends longitudinally along a central axis and has opposed sidewalls and a bottom wall. The slide portion defines a bracket recess in the bottom wall and defines a receiver well between the opposed sidewalls and above the handgrip portion. A recoil bracket is movably disposed in the bracket recess. In some examples, the grip module can be made of a metal or a metal-infused polymer. During use, the recoil bracket can move in response to forces exerted on it during the firing cycle.