Abstract: A trigger assembly apparatus includes spherical portion(s) and spherical bearing(s), rounded sear, stabilizing catch, and complimentary shield. In an exemplary embodiment, the spherical portion(s) and spherical bearing(s) respond to non-linear movement. Further, the interaction of the spherical portion(s) and spherical bearing(s) results in the mobility of the trigger in relation to the 6 degrees of freedom thereby resulting in the firearm being generally unaffected by side to side movement of the trigger during activation. The trigger assembly may also include but is not limited to a rounded sear, stabilizing catch, and complimentary shield. The rounded portion of the sear engages the hammer stop notch at a single point further resulting in the firearm being generally unaffected by side to side movement of the trigger. Additionally the stabilizing catch and shield helps facilitate the proper reset of the trigger assembly.

Abstract: A repeating weapon includes a bolt with a bolt body movable between locked and unlocked positions, and a trigger mechanism with a trigger, a sear movable between cocked and half-cocked positions, a transfer element movable by actuation of trigger between a holding position to hold the sear in the cocked position and a release position to move the sear into the half-cocked position, and a breech catch element movable transversely to the bolt body to limit the axial movement of bolt during opening. A control cam is arranged on the bolt body for moving the breech catch element into a safe position when the bolt body is moved into the unlocked position, and a blocking element cooperating with the transfer element is arranged on the breech catch element for preventing movement of the transfer element into the release position when the breech catch element moves into the safe position.

Abstract: Disclosed is a linear trigger mechanism for a firearm. In certain examples, the trigger mechanism includes a trigger housing configured to couple with a frame of the firearm. The trigger mechanism also includes a trigger disposed below the trigger housing and slideably coupled with the trigger housing, and a trigger bar having a first end coupled with the trigger and a second end slideably coupled with an ejector housing. The trigger mechanism also includes a sear assembly pivotally coupled with the second end of the trigger bar and configured to engage a firing pin of the firearm.

Abstract: A bolt-action for a firearm includes a receiver that defines a chamber having a longitudinal axis and a breech end of the receiver. A bolt is at least partially inside the chamber and slidingly engaged with the receiver. The bolt has a locked position that prevents movement of the bolt parallel to the longitudinal axis of the chamber and an unlocked position that allows movement of the bolt parallel to the longitudinal axis of the chamber. A spring under compression is operably engaged with the bolt to bias the bolt away from the breech end of the receiver.

Abstract: A firing mechanism for a striker-fired, magazine-fed semi-automatic pistol includes a linear cam that is attached to and moves with a slide. The linear cam moves a cam follower that pivots a reset bar. The reset bar bears upon a trigger bar projection, moving the trigger bar projection out of engagement with a lower end of a sear lower arm as the slide closes. Interference between the reset bar and the trigger bar projection prevents a second pull of the trigger from releasing the sear and moving the sear to the firing position to fire a second round until the pistol is in battery, while allowing the shooter to achieve a high rate of semi-automatic fire.

Abstract: Trigger assemblies for firearms, such as pistols, that include a striker assembly with a spring-loaded firing pin and downwardly-protruding firing pin flag for interaction with the trigger assembly. The trigger assemblies include a trigger, a trigger spring, a trigger bar with a connector protrusion for cooperation with a connector that can be inserted into the trigger housing, and the trigger bar is formed to cooperate with a pawl mount, and a sear is provided to cooperate with the firing pin flag.

Abstract: A trigger device is disclosed. The trigger device comprises a housing, a trigger, a reverser, and a first pull weight adjustment mechanism. The trigger is rotatably mounted in the housing via a trigger pivot pin. The trigger comprises a trigger tooth. The reverser is rotatably mounted in the housing via a reverser pivot pin. The reverser comprises a reverser tooth. The first pull weight adjustment mechanism is coupled between the trigger and the reverser to bias the trigger in a first direction and the reverser in an opposite direction. Actuation of the trigger causes the trigger to rotate in the opposite direction, the trigger tooth to engage the reverser tooth, and the reverser to rotate in the first direction.

Abstract: A trigger assembly having a user-adjustable actuation force. The trigger assembly includes a trigger and indexing pin that are rotatable about a pivot axis and mounted to a locking block of a firearm. A torsion spring bridges the indexing pin and the locking block. Rotation of the indexing pin in a first rotational direction increases the actuation force of the trigger assembly, while rotation of the indexing pin in a second, opposite rotational direction decreases the actuation force. The end user is able to adjust the actuation force of the trigger without procuring additional components and without requiring the services of a locksmith. A safety trigger has a lower pivot point on the trigger and provides a stop that prevents retraction of the trigger unless the safety trigger is retracted first.

Abstract: Adjustability of trigger pull force is enable by the use of a spring interfacing with a trigger shoe counterweight. The spring force is adjustable by use of a set screw interfacing with the spring. A pivot arm member acts between a trigger shoe counterweight and a firing pin release arm to fix the ratio of trigger shoe pull force and firing pin release arm force.

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 firearm with a compound lever trigger mechanism includes a first member pivotally attached to a firearm receiver at a first pivot and a first lever arm extending away from the first pivot attachment point to a sear. The first member is pivotable between a first position where the sear engages a firing element and a second position where the sear does not engage the firing element. A trigger member is pivotally attached to the first member first lever arm with a trigger blade arm extending away from the second pivot in one direction and a bearing arm extending away in another direction toward bearing contact with a surface of the receiver. Pulling the trigger blade arm causes the trigger member to pivot relative to the first member and the bearing arm to move in bearing contact against the receiver, thereby pivoting the lever arm from the first position to the second position.

Abstract: The present disclosure provides a system and method for adjusting the normal resting position of a trigger for a firearm. The system and method allow for further customization of the fit of the firearm by moving the resting position of the trigger forward to accommodate shooters with larger hands and moving the resting position of the trigger rearward to accommodate shooters with smaller hands.

Abstract: A trigger mechanism or fire control for trigger operable devices includes a housing; a sear having a sear body coupled to the housing and including a primary engagement surface and an active sear support reset geometry; and a sear support coupled to the housing and having a body with a sear engagement surface and a passive sear support reset geometry. The primary engagement surface of the sear is moved into an overlapping condition with the sear engagement surface of the sear support as the sear is moved from a discharged position to a reset position after actuation of the trigger operable device. In addition, interaction between the active sear support reset geometry and the passive sear support reset geometry causes a mechanical displacement of the sear support to a reset position.

Abstract: Trigger assemblies are provided for restraining a firing pin of a firearm on a selective basis. The triggers assemblies include a first and a second lever mounted for rotation within a housing. The first lever is configured to be rotated by the user, and rotation of the first lever imparts rotation to the second lever to initiate the discharge of the firearm. The trigger assemblies also include a safety mechanism having a safety lever that is movable between a first and a second angular position. The safety lever is configured to prevent movement of the first and second levers when the safety lever is in its first angular position, thereby preventing discharge of the firearm.

Abstract: A sear mechanism for a firearm pivotably mounts a sear body on a sear lever which is pivotably mounted on the firearm frame. An actuator lever is also pivotably mounted on the frame. The actuator lever is pivoted by a trigger bar connected to the firearm's trigger. Pivoting of the actuator lever when the trigger is pulled allows the sear lever to pivot. Pivoting of the sear lever allows the sear body to fall off of a surface on a striker, releasing the striker to discharge the firearm.

Abstract: Provided is a trigger mechanism having a housing, a trigger member, a trigger dog, and a striker dog. The trigger member is pivotally mounted in the housing, movable between set and pulled positions. The trigger dog is pivotally mounted in the housing and a first lever arm portion of the trigger dog engages a lever arm portion of the trigger member by a first over-center linkage. The striker dog is pivotally mounted in the housing, movable between set and released positions with a lever arm portion engaged to a second lever arm portion of the trigger dog by a second over-center linkage. The over-center linkages are configured to inhibit rotation of the striker dog from the set position to the released position until the trigger member is manipulated from the set position to the pulled position with a force greater than an engagement threshold of the over-center linkages.

Abstract: A firearm with manually operated bolt release includes a receiver defining a longitudinally-extending cavity, a barrel, and a bolt slideably mounted in the receiver for reciprocating axial movement between a forward closed breech position in battery with the barrel and a rearward open breech position. A recoil spring biases the bolt forward towards the closed breech position. A manually actuated bolt release is pivotably mounted in the firearm and movable between an engaged position and a disengaged position. The bolt release includes a locking portion configured to selectively engage a locking recess formed on the bolt for holding the bolt in the open breech position, and disengage the locking recess for releasing the bolt to reclose the breech. In one embodiment, the bolt may be automatically disengaged from the bolt release by retracting the bolt a second time.

Abstract: A firing pin assembly of a nail gun and a bonding method thereof are provided. The firing pin assembly includes a firing pin body and a firing pin head made of a material having a hardness greater than that of the firing pin body. The firing pin head has a first end and a second end. The first end is made of a material having a density lower than that of the second end. The first end and the front end face of the firing pin body are preheated to a set temperature. The top of the second end is pressed toward the front end face of the firing pin body for an appropriate bonding time, so that the material particles of the firing pin body are dissociated and fused into the first end of the firing pin head to form the firing pin assembly.

Abstract: A trigger assembly having a user-adjustable actuation force. The trigger assembly includes a trigger and indexing pin that are rotatable about a pivot axis and mounted to a locking block of a firearm. A torsion spring bridges the indexing pin and the locking block. Rotation of the indexing pin in a first rotational direction increases the actuation force of the trigger assembly, while rotation of the indexing pin in a second, opposite rotational direction decreases the actuation force. The end user is able to adjust the actuation force of the trigger without procuring additional components and without requiring the services of a locksmith. A safety trigger has a lower pivot point on the trigger and provides a stop that prevents retraction of the trigger unless the safety trigger is retracted first.

Abstract: A tubing conveying perforating system with a firing head is provided, and a method for using the same is provided. The firing head includes a firing pin and a percussion initiator. The firing pin is configured to degrade over a predetermined period of time from an initial state to a degraded state, and in the degraded state the firing head is inoperable.

Abstract: Various examples of a modular trigger control unit for firearms are described. The trigger control unit can be removably installed on a grip frame and installed between the grip frame and a slide assembly of a semi-automatic firearm. The trigger control unit includes at least a trigger pin and a trigger pivotable around the trigger pin when pulled. In response to the trigger being pulled by a user when the trigger control unit is installed between the grip frame and the slide assembly, a firing pin lug of a striker-firing mechanism in the slide assembly is released thereby allowing a striker of the striker-firing mechanism to move forward with respect to the slide assembly. Moreover, the trigger control unit is secured to the grip frame at least by the trigger pin such that removal of the trigger control unit from the grip frame requires removal of the trigger pin.

Abstract: Trigger-cycled firearms have a frame, a barrel, a bolt assembly connected to the frame in registration with the barrel and operable to reciprocate between a retracted position and a forward battery position, a trigger lever connected to the frame and operable to move between a forward rest position and a rearward actuated position, and the trigger lever operably connected to the bolt to move the bolt from the forward battery position to the retracted position and to release the bolt to the forward battery position and discharge the firearm in response to movement of the trigger lever from the forward rest position to the rearward actuated position when the bolt is in the forward position. There may be a connector bar pivotally connected to the frame and operably engaged to the bolt assembly and to the trigger lever. The connector bar may be slidably connected to the bolt assembly.

Abstract: A trigger device for activating a firing mechanism, the trigger device comprising a housing, a trigger pivotally mounted on the housing via a trigger pivot pin, a sear arm comprising a first sear surface, a ticker extending generally from the trigger to the sear arm, the ticker pivotable about a ticker pivot pin, the ticker comprising spaced apart flanges, each of which comprises an aperture defining at least a first contact surface, and a captured roller positioned at least partially within the apertures, wherein in a captured position the first sear surface and the first contact surfaces engage the captured roller and in a released position the first contact surfaces disengage from the captured roller to allow the captured roller to move within the aperture.

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 firearm includes a frame assembly, a slide assembly releasably and slidably coupled to the frame assembly, a bolt assembly including a leading surface, a firing pin, and an adjuster. The adjuster includes a body and an extension. The body defines a first bore, defines a leading surface, and has a thickness. The leading surface is configured to interface with a rear portion of a cartridge, and the body spaces the leading surface from the leading surface of the bolt assembly. The extension couples the body to the bolt assembly and defines a second bore that shares a common central axis with the first bore. The first bore and the second bore receive the firing pin such that the firing pin at least selectively protrudes from the leading surface of the adjuster to engage the cartridge.

Abstract: A receiver and a method for manufacturing it are disclosed. The receiver contains a first panel, a second panel, and a buffer tube insert sandwiched between the first panel and the second panel.

Abstract: A firearm comprising an upper receiver and a charging handle is disclosed. A charging handle is coupled to the upper receiver and comprises a handle assembly rotationally coupled to a main body about a first and a second pivot point. The handle assembly includes a first handle having an edge nearest the main body and a latch extending from the first handle parallel to the main body for interfacing with the upper receiver in a first position, a second handle having an edge nearest the main body, and a push rod positioned between the edge of the first handle and the edge of the second handle, such that when force is applied to the second handle, energy is transferred through the second handle to the push rod and to the first handle, moving the latch into a second position.

Abstract: A trigger mechanism for a repeating rifle includes a sear pivotable about a first axis, a detent lever pivotable about a second axis and having an extension with a catch that is engaged with the sear when the mechanism is cocked, and a trigger pivotable about a trigger axis, wherein upon rotational actuation thereof, the trigger acts directly upon the detent lever, without any intervening components, pivoting the detent lever about the second axis in a direction opposite to the trigger rotation, and releasing the sear projection from the detent lever catch. In embodiments, the trigger pull is adjusted by an adjusting spring driven by an adjusting screw that is freely accessible from beneath the trigger mechanism. Embodiments further include a sear return spring between the sear and detent lever, and/or a trigger return spring opposing the adjusting spring that holds the trigger in a defined position without play.

Abstract: A trigger mechanism for a firearm is presented. The trigger mechanism has a trigger housing, a sear, a sear block and a trigger lever. Actuation of the trigger causes the trigger lever to rotate and eventually come into contact and move the sear block, which permits the sear to fall and permits the actuation of the firing mechanism. The trigger lever may be pivotally secured to the housing at a first pivot and the sear block is pivotally secured to the housing at a second pivot. The first and second pivots may be spaced apart from each other or coincident.

Abstract: A bolt carrier for a firearm, including lugs on the first end to engage corresponding lugs of a barrel receiver/extension. The bolt carrier includes a cam slot within which a cam pin from a bolt is constrained to travel along a cam slot path during rotational and translational movement of the bolt. The cam slot defines (1) a first cam slot means for constraining motion of the cam pin and the bolt during engagement or disengagement of the lugs of the bolt and the corresponding lugs of the barrel receiver or extension; (2) a second cam slot means for imparting rotational movement to the cam pin and bolt during linear movement of the bolt carrier; and (3) a third cam slot means for constraining motion of the cam pin at an end of a rearward travel of the bolt and bolt carrier during an ejection cycle. The combination of the first, second, and third cam slot means yields an extension of the unlocking by over 10% and a delay of the actual unlock of the bolt by over 5% relative to TDP.

Abstract: The semiautomatic firearm comprises: a movable assembly (4) adapted to move against a return spring (10) by recovered energy resulting from pressure exerted when firing an ammunition (7), wherein the firearm comprises a stopper, a latch and a striker cooperating with a hammer (5) controlled by a trigger (6), at least one of a pivoting fork and a hammer used for locking the movable assembly in a compressed position of the return spring at a rear position of movement of the movable assembly, after each shot, an unlocking assembly (12) that is manually actionable and able to act on at least one of the pivoting fork and the hammer for releasing the movable assembly (4) and allowing the assisted return of the movable assembly (4) in order for reloading.

Abstract: A switching mechanism that controls a drive circuit of an electric motor in order to select any one of a single shooting mode, and a successive shooting mode. The switching mechanism includes a selector unit which is provided in order to select between the single shooting mode and the successive shooting mode, a switch which closes the drive circuit in response to an operation of a trigger, and a cut-off member which turns off the switch when the single shooting mode is selected. An engagement location for the movable portion and the cut-off member in the piston cylinder mechanism is set in a front portion in a direction of the reciprocating operation of the movable portion, and a range of selecting a time taken until the front portion engages with the cut-off member after the movable portion starts to retract can be lengthened.

Abstract: A trigger device for activating a firing mechanism, the trigger device comprising a housing, a trigger pivotally mounted on the housing via a trigger pivot pin, a sear arm comprising a first sear surface, a ticker extending generally from the trigger to the sear arm, the ticker pivotable about a ticker pivot pin, the ticker comprising spaced apart flanges, each of which comprises an aperture defining at least a first contact surface, and a captured roller positioned at least partially within the apertures, wherein in a captured position the first sear surface and the first contact surfaces engage the captured roller and in a released position the first contact surfaces disengage from the captured roller to allow the captured roller to move within the aperture.

Abstract: A firearm accessory mount for a take-down rifle is disclosed. The mount has a first portion having an accessory interface, and a second portion opposing the first portion. The second portion has a locking block with a proximal end and a distal end. The proximal end is shaped and positioned to engage a receiver assembly of the take-down rifle. At least one of the first portion or the second portion has a barrel engagement surface. A related method is also disclosed.

Abstract: A forward assist assembly movable between a standby position and an engaged position in a forward assist bore of a firearm. The assembly includes a button and an single-piece pawl. The single-piece pawl includes an integrally-formed pivot boss supporting the pawl in the button for pivotal movement with respect to the button. The pivot boss also transfers a linear actuation force from the button to the pawl to move the assembly into the engaged position. The single-piece pawl also includes an integrally-formed finger having an engagement surface for engaging a ratchet tooth on the bolt carrier in the engaged position. The single-piece pawl also includes an integrally-formed retaining surface to retain the forward assist assembly in the standby position in the forward assist bore. The single-piece pawl also includes an integrally-formed stop surface to abut a portion of the button in the standby position.

Abstract: A receiver for a firearm may include a linkage that integrates movement of left and right forward assists. The receiver may include a linkage connecting one or both of the forward assists to a bolt catch. The receiver may included both a connection between the left and right forward assists as well as a connection between one or both of the forward assists and the bolt catch. The receiver may include a linkage connecting the forward assist mechanism with the bolt catch mechanism such that actuation of the forward assist mechanism moves the bolt carrier and moves the bolt catch mechanism from the engaged position to the disengaged position.

Abstract: There is disclosed a two-stage trigger with a large trigger/sear bearing area and an optimized sear loading angle that provides a lightweight trigger-pull. There is further disclosed a safety that blocks rotation of the trigger.

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.

Abstract: An apparatus includes a trigger assembly for initiating a firing of a firearm. The trigger assembly includes a trigger blocking portion. A safety selector lever is configured for joining to the firearm. The safety selector lever has an on position with the safety selector generally in a downward position and accessible to a user's thumb of a hand gripping a grip of the firearm. The safety selector is rotatable by the user's thumb to an off position where the user operates the trigger assembly while maintaining the safety selector in the off position. A safety cam is in engagement with a pivot end of the safety selector. The safety cam is configured for engaging the trigger blocking portion in the on position to inhibit the firing and for engaging the trigger blocking portion in the off position.

Abstract: An automatic or semi-automatic firearm including a trigger having a frame, at least one trigger sear extending from the frame, and a hammer having a hammer pivot axis, a head and at least one hammer sear disposed on a lateral side of the hammer between the hammer pivot axis and the head, wherein the frame includes a pivot axis and the at least one trigger sear includes a trigger sear surface, the at least one trigger sear extending from the frame such that the at least one trigger sear engages a corresponding one of the at least one hammer sear.

Abstract: A firing mechanism for a firearm is provided for reducing maximum trigger pull weight attributable to a sear and for reducing trigger pre-travel and over-travel distances. By this, the likelihood of sear flutter phenomena is greatly reduced while also decreasing or maintaining maximum trigger pull weight. Also, hand movement during firing is reduced helping to increase accuracy.

Abstract: A game controller for controlling video games or other electronic interactive systems, having an adjustable trigger system for calibration or customized control of trigger action. The game controller includes a controller chassis and an actuator system, which includes a trigger body, a trigger mechanism chassis, a strike plate coupled to the trigger body, a first trigger adjustment control screw received in a screw thread disposed within the controller chassis, and a second trigger adjustment control screw received in a screw thread disposed within the controller chassis, wherein a portion of each of the first trigger adjustment control screw and second trigger adjustment control screw engages with a respective portion of the strike plate, and said portion of each of the first trigger adjustment control screw and second trigger adjustment control screw each create an end stop to limit the actuator movement of the trigger body.

Abstract: A trigger mechanism that gives a shooter a durable, adjustable, soft and gentle pull. In this design, the sear block remains, but the trigger mechanism is replaced with a new, softer action mechanism. This mechanism uses a tripper that attaches to a trip. The trip is a formed body that has a lower frame and a top bearing that sits against the bottom of the seer. When the trigger is pulled, it rotates the tripper forward, which causes the trip to rotate backwards. The backward movement of the trip causes the top bearing to roll off the bottom of the seer, causing the gun to fire. The rotation of the trip is smooth compared to the snapping action of the seer in the prior art designs. This smooth movement does not jar the action, making for a better shot.

Abstract: A pistol having a sliding hammer (5), a trigger mechanism including a trigger rod (2), an automatic safety (10) which can engage said sliding hammer (5) and a two armed lever (8) rotatably mounted on an axis (15) for operating the automatic safety (10) by means of a first arm (9), said trigger rod (2) having a rear end which is bent to a form a horizontal part, said horizontal part comprising: a first alignment edge (3) which engages a hammer ledge (4) on said sliding hammer (5) and a second alignment edge (6) which engages a hollow (7) in a second arm (11) of the two armed lever (8).

Abstract: A trigger assembly has a sear with a stop surface engageable with a reciprocating component for holding the reciprocating component in a cocked configuration. A trigger is movable into and out of engagement with the sear to hold and release the reciprocating component. A drop pendulum has a trigger cam engageable with the trigger. A spring acts between the trigger and the drop pendulum to bias the trigger cam into engagement with the trigger. The drop pendulum also has a head cam follower engageable with the reciprocating component. Motion of the reciprocating component acting through the head cam follower and the trigger cam forces the trigger to return to a configuration of engagement between the trigger and the sear. Use of the drop pendulum improves the stability of trigger mechanisms and effectively inhibits accidental discharge of firearms when subjected to inertial forces which occur when the firearm is dropped.

Abstract: A firing mechanism for a firearm is provided for reducing maximum trigger pull weight attributable to a sear and for reducing trigger pre-travel and over-travel distances. By this, the likelihood of sear flutter phenomena is greatly reduced while also decreasing or maintaining maximum trigger pull weight. Also, hand movement during firing is reduced helping to increase accuracy.

Abstract: An externally-operated weapon has a direct current servo motor that provides motive force to drive the weapon operating group at an average rate of fire. Within a single cycle, the weapon operating group is driven at rates greater than and less than the average rate of fire, while the overall rate for a single cycle is maintained at the average rate of fire. Some benefits of servo motor control include reduced power consumption, increased bolt dwell time, expansion of the weapon's battlefield role from one to many roles, and increased accuracy and shot-to-shot precision while firing from an open bolt position.

Abstract: A firing mechanism for a firearm is provided for reducing maximum trigger pull weight attributable to a sear and for reducing trigger pre-travel and over-travel distances. By this, the likelihood of sear flutter phenomena is greatly reduced while also decreasing or maintaining maximum trigger pull weight. Also, hand movement during firing is reduced helping to increase accuracy.

Abstract: A threaded trigger travel adjustment insert to be located in the existing grip screw hole of a lower receiver commonly associated with a rifle or a pistol to connect the hand grip to the receiver. The trigger travel adjustment insert has a trigger contact tip at one end thereof for receipt within the fire control cavity of the lower receiver at which to contact the trigger tang of the weapon. Rotating the threaded trigger travel adjustment insert through the grip screw hole causes the trigger contact tip of the insert to elevate the trigger tang resulting in a corresponding reduction in the overlap between the trigger sear and the hammer sear notch prior to the trigger being pulled. Accordingly, the distance traveled by the trigger through the fire control cavity after the trigger is pulled and released is advantageously shortened to improve trigger predictability and reliably, thereby facilitating improved accuracy.

Abstract: A charging handle for a firearm having a receiver has an elongated rod running from a front end to a rear end at which a crossbar portion is connected to the rod. The crossbar portion is laterally situated to each side of the elongated rod and features redirection channels on both the top and bottom surfaces and is sized, shaped, and adapted to be gripped by a shooter using the firearm. The charging handle has flexible tabs on either side of the elongated rod for securement of the charging handle within groove on the firearm receiver. Rearward force by a user on either the left, right, or both sides of the crossbar portion user disengages the tabs from the grooves and releases the charging handle thereby allowing the charging handle to freely move along the firearm receiver.