Abstract: A small lightweight weapon system for integration into an unmanned aerial vehicle comprises a weapon operating group which utilizes blowback operation to fire a full-powered centerfire rifle ammunition. An operating rod of the weapon operating group has an axis of translation offset from the longitudinal axis of the barrel thereby creating a moment couple on the system. A motor assembly controls the operation of the weapon operating group. Through a gear train, actuation of the motor assembly lifts a sear against a return torsion spring, which holds the operating group back when not firing. The gear train comprises a one way flywheel disconnect to increase the torque of the direct current motor and overcome the force of the torsion spring. Intelligent motor commutation and burst control are achieved through an encoder and software package.

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: An auto-loading firearm having a system for switching between live fire and training modes via a selector switch mounted either on the firearm or on a specially designed training attachment. An action arm is selectively movable in response to movement of the selector switch between a live fire position, in which the firearm is free to operate as normal, and a training mode position where the action arm interrupts operation of the hammer and prevents the firearm from discharging while allowing the trigger and, if present, trigger spring to continue operating.

Abstract: A firearm includes a barrel having a breech end. A receiver is engaged with the breach end of the barrel and defines a chamber. A vent path is through the barrel downstream from the breech end. A latch is downstream from the vent path and pivotally connected to the receiver. A bolt is at least partially inside the chamber. The bolt has a locked position in which the latch is engaged with the bolt to prevent the bolt from moving away from the breech end of the barrel and a released position in which the latch is not engaged with the bolt.

Abstract: A firearm includes a barrel having a breech end and a vent path through the barrel downstream from the breech end. A receiver is engaged with the breach end of the barrel and defines a chamber. A latch is connected to the receiver, and an actuator is downstream from the vent path and operably engaged with the latch. A bolt is at least partially inside the chamber. The bolt has a locked position in which the latch is engaged with the bolt to prevent the bolt from moving away from the breech end of that barrel and a released position in which the latch is not engaged with the bolt.

Abstract: A recoil spring assembly for a firearm provides a spring insert with an end piece. The end piece interacts with other components of the firearm to selectively secure the recoil spring in position. This allows the recoil spring to be selectively retained in the firearm when disassembling and reassembling the firearm.

Abstract: A bolt hold open mechanism assembly is disclosed. The bolt hold open mechanism assembly contains a connector rod, a follower lever associated with the connector rod, a bolt stop associated with the connector rod, and a lifter lever comprising at least one protrusion configured to interact with a magazine follower.

Abstract: Trigger groups for semi-automatic firearms have a frame, a hammer connected to the frame and movable between a cocked position and a striking position, the hammer being biased toward the striking position, a trigger element connected to the frame and movable by a user between a forward position and a rearward position, a selector connected to the frame and movable between at least a first position and a second position, a plurality of retention facilities each operable to selectively restrain the hammer in the cocked position, and when the selector is in the first position to enable discharge of the firearm in response to movement of the trigger to the rearward position, and when the selector is in the second position to enable discharge of the firearm in response to movement of the trigger to the forward position after movement to the rearward position.

Abstract: Provided is a pistol striker safety plunger having an axially nonrotatable plunger body configured for installation in a pistol slide to selectively block forward movement of a striker when in a fist position and to allow forward movement when in a lifted position. The body includes a bottom surface configured to interface with a lifting trigger bar and having a beveled forward portion being substantially flat rearward thereof. Alternatively, an adaptable pistol slide kit may be interchangeably operable on pistol frame assemblies of different configurations. The kit includes a slide body with a striker safety plunger socket and a plurality of interchangeable axially nonrotatable striker safety plungers configured to be slidably received in the plunger socket. A first plunger has a bottom surface with beveled forward and rear portions and a second plunger has a bottom surface with a beveled forward portion and substantially flat rearward of the forward bevel.

Abstract: Exemplary embodiments include a completely redesigned fire control group to allow the safety to be engaged at any time. This unique feature can reduce or eliminate the possibility of accidental discharges of the weapon system, as engaging the safety will not allow the hammer to move forward even in the event of a malfunction.

Abstract: A modular trigger assembly having auto-tensioning hammer pin and trigger pins which allow for rapid installation and removal of the modular trigger assembly from the lower receiver of an ArmaLite style modular rifle using minimal tools. When installed and under tension, the auto-tensioning pins remain flush with the exterior of the lower receiver and present no external parts outside of the lower receiver while maintaining anti-walk and anti-roll properties.

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: 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 trigger mechanism for a firearm includes a hammer element pivotable between a ready position and a fired position, and a trigger element pivotable between a first position that retains the hammer element in the ready position, and a second position that releases the hammer element. The hammer element may include a hammer sear or a trigger sear having an initial sear surface and a terminal sear surface. The trigger element may include a trigger sear that at least partially engages a portion of the hammer sear when the hammer element is in the ready position.

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: Techniques and componentry are disclosed for an air gun with an adjustable trigger mechanism. The air gun includes a cylinder attached to a barrel and a trigger mechanism. The trigger mechanism includes a sear operatively coupled to a trigger bar and configured to release a piston disposed within the cylinder in response to operating the trigger mechanism. Operatively coupled to the trigger bar is a trigger blade that includes a trigger stage bracket. The trigger stage bracket provides a second pull stage that operates with more resistance than a first pull stage during trigger blade movement. An adjustment screw is disposed within the trigger blade and is in contact with the trigger stage bracket. The adjustment screw positions the trigger stage bracket relative to the trigger blade to adjust a distance at which the trigger blade transitions from the first pull stage to the second pull stage.

Abstract: A modified trigger assembly for a handgun has a shortened trigger bar with an angled end that engages a connector to form a gap that reduces potential energy between the trigger bar and the connector, such that the connector is inhibited from disengaging from the trigger bar when the trigger is pulled or released. A gap forms between an angled end of the trigger bar and a first end of the connector. The gap and the shortened length of the trigger bar reduce potential energy forces that could disengage the connector from the trigger bar. By remaining engaged with the trigger bar, the connector is prevented from resetting to a natural position; and consequently, the handgun can discharge from both a trigger pull position and a trigger release position. Consequently, a repeated shot occurs when releasing the trigger after a natural triggering movement of pulling a trigger.

Abstract: A firearm trigger assembly is disclosed. The disclosed assembly may include a trigger, a disconnect, and a hammer, each of which may be configured to be spring loaded when installed in a firearm receiver. Installation of the trigger assembly in a firearm receiver may include pivotally coupling the trigger and disconnect to the firearm receiver using a trigger pivot pin, and pivotally coupling the hammer to the firearm receiver using a hammer pivot pin. The trigger may include an integral sear feature configured to provide a mechanical stop to the hammer. The disconnect may be configured to be at least partially located in a disconnect slot located alongside or adjacent to the trigger sear feature when the disconnect is pivotally coupled to the trigger. The disconnect and hammer may each include integral cam features configured to buffer hammer contact during firearm recoil.

Abstract: Disclosed is a firearm configuration for a handgun. The firearm configuration is designed to reduce the recoil forces encountered by a user upon firing the weapon. It further includes a recoil plate that absorbs forces generated by the slide during firing. Recoil forces are reduced by lowering the firearm's center of mass and by aligning a recoiling mass with the user's arm and trigger finger. The firearm configuration further includes a locking block which prevents rotational and lateral movement of the barrel upon firing.

Abstract: The trigger mechanism for automatic and semi-automatic pistols contains a trigger lever (53), a trigger (50) connected to the trigger lever (53) and a container (302) for guiding a rear part of a breech (304). The trigger lever (53) is connected to the trigger (50) in a rotary way and comprises two arms (54, 55) having a space between them through which a magazine of the pistol passes and being connected with a cross rail (56) to which a vertical plate (57) is connected and which is provided on its top side with a top tooth (59) for tensioning a firing pin (1) and with a projection (49) for releasing the firing pin (1) block (46). The trigger (50), the vertical plate (57) and the firing pin (1) lie on a vertical plane of symmetry of the pistol and the arms (54, 55) are located symmetrically with respect to this plane.

Abstract: Provided in various example embodiments is a firing mechanism for firearms including a trigger with a movable sear attached to the trigger. When dimensional interference occurs within the trigger group, the movable sear is displaced from a seated position to an unseated position, instead of moving the trigger out of the non-firing position. This allows a firearm to be cocked when the trigger is locked in safe mode, and allows a firearm to be placed into safe mode at any time, regardless of the position of the hammer. This functionality improves the effectiveness of automatic trigger locking mechanisms discussed in related applications, and may be applied in various forms to firearms generally.

Abstract: A trigger mechanism and related methods employ translating and pivoting of a trigger bar. A method of operating a firing pin safety includes generating a movement of a trigger bar pivotally coupled with a trigger. A sear is engaged with the trigger bar during the movement of the trigger bar so as to disengage the sear from a hammer. The trigger bar is engaged with the hammer during rotation of the hammer so as to induce a rotation of the trigger bar relative to the trigger. The firing pin safety is engaged with the trigger bar during the rotation of the trigger bar relative to the trigger so as to reconfigure the firing pin safety from an engaged configuration that prevents actuation of a firing pin by the hammer to a disengaged configuration that accommodates actuation of the firing pin by the hammer.

Abstract: A trigger mechanism for a firearm includes a hammer element pivotable between a ready position and a fired position, and a trigger element pivotable between a first position that retains the hammer element in the ready position, and a second position that releases the hammer element. The hammer element may include a hammer sear having an initial sear surface and a terminal sear surface. The trigger element may include a trigger sear that at least partially engages a portion of the hammer sear when the hammer element is in the ready position.

Abstract: Disclosed is a device for facilitating disassembly of a firearm and release of a magazine removably attached to the firearm. The device comprising a fulcrum configured to be attached to the firearm, wherein the firearm comprises an upper receiver, a lower receiver, a rear takedown pin and a magazine release mechanism, wherein the rear takedown pin is configured to secure the upper receiver to the lower receiver, wherein the magazine release mechanism is configured to release the magazine from the firearm based on actuation of the magazine release mechanism.

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.

Abstract: A telescopic recoil system for a firearm having a receiver and a bolt carrier includes a recoil system base, an axle fixed to the base, a central buffer tube slidably mounted on the axle, an axle buffer spring between the base and central buffer tube, biasing the central buffer tube away from the base, an outer tube slidably mounted on a forward portion of the central buffer tube, a spring buffer tube slidably mounted on a rearward portion of the central buffer tube, a rear buffer spring between the base and spring buffer tube, biasing the spring buffer tube away from the base, a central spring between the spring buffer tube and outer tube, biasing the outer tube away from the spring buffer tube and away from the base and an exchangeable spring between the outer tube and the bolt carrier, biasing the outer tube away from the bolt carrier.

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 permit the actuation of the firing mechanism.

Abstract: A pistol grip that assists in bump firing a pistol is disclosed. The bump fire grip may comprise a partially hollow exterior shaft that can contain an interior shaft. The interior shaft can be sized to slide from the front to the back of the exterior shaft, and vice versa. The interior shaft can slide on one or more pins, wherein the pins are lockedly engaged in the exterior shaft, pass through the interior shaft, but are not attached to the interior shaft. The bump fire grip can also employ a male/female grove design such that male groves on the exterior shaft can receive female groves on the interior shaft. The interior shaft can slide on the male/female groves. The bump fire grip can also include a locking mechanism, which, when engaged, can prevent the interior shaft from sliding within the exterior shaft, prohibiting bump firing.

Abstract: Firearms where the bolt catch can be released from either side using the same or a substantially similar motion using contact features that look, feel, or operate similarly on both sides, that are located within the firearm rather than externally, that can be used more easily or reliably, or a combination thereof. In some embodiments, a bolt catch engagement feature, magazine release mechanism, or both, are also (e.g., similarly) ambidextrous. In many embodiments, a user action on one side of the firearm is substantially similar to, but in the opposite direction from, a user action on the other side that performs the same function. In various embodiments, a left button, pad, or feature is directly opposite and in line with a right button, pad, or feature. Bolt catches can use two levers and magazine release mechanisms can use two parallel elongated members perpendicular to the barrel and a catch actuator.

Abstract: Disclosed is a firearm configuration for a handgun. The firearm configuration is designed to reduce the recoil forces encountered by a user upon firing the weapon. Recoil forces are reduced by lowering the firearm's center of mass and by aligning a recoiling mass with the user's arm and trigger finger. The various detail of the present disclosure, and the manner in which they interrelate, will be described in greater detail hereinafter.

Abstract: An extendable slide member on a pistol slide action, providing leverage and a gripping base for a user to pull back or “rack” the slide along guides on a pistol frame, in a longitudinal motion relative to the pistol frame. The slide member facilitating racking the slide when in an extended position the slide member rotates either laterally outwards from a side surface of the slide or vertically upwards from a top surface of the slide, and presents a gripping or holding segment for the user to pull the slide towards the breech end of the pistol.

Abstract: Disclosed is a firearm configuration for a handgun. The firearm configuration is designed to reduce the recoil forces encountered by a user upon firing the weapon. It further includes a recoil plate that absorbs forces generated by the slide during firing. The various details of the present disclosure, and the manner in which they interrelate, will be described in greater detail hereinafter.

Abstract: A trigger assembly prevents the rifle from being damaged and improves the user safety by preventing unintentional firing (rifle's falling down to the ground, hitting any place, etc.) as long as a trigger lever is not pulled by the user.

Abstract: A handgun configured with a hammer insert retained within a rear portion of a frame of the handgun, said hammer insert configured for bearing loads imparted thereto during cocking and firing sequence. And a hammer insert for use in conjunction with a frame of a handheld firearm, the hammer insert configured for sliding insertion into the frame from a rear face thereof, and configured for pivotally supporting a hammer.

Abstract: A firearm firing mechanism is so configured that a hammer is retaining by a front retaining block before pressing a trigger; pressing the trigger slightly at a first stage causes a main bar to bias a rear retaining block and the front retaining block backwardly at a relatively smaller angle to release the hammer in performing a single-shot action; pressing the trigger heavily at a second stage causes the main bar at a relatively longer distance so that the hammer is kept away from the front retaining block when it is returned, and the hammer is secured by the rear retaining block upon a backward displacement of a bolt and backward biasing of the hammer, and a linkage is forced to move the rear retaining block in releasing the hammer for firing when the bolt forward again, and a continuous multi-shot firing action is performed by means of repeating this operation. Thus, the invention enhances the operation convenience in achieving single-shot and multi-shot firing actions.

Abstract: A trigger mechanism includes a hammer, and a trigger disconnector assembly including a trigger body having a trigger nose, and a disconnector having a disconnector hook. A reset lever is mounted for movement between open and closed positions. The trigger disconnector assembly is in mechanical communication with the reset lever. A striking end of the hammer strikes the reset lever in a past-cocked position of the hammer moving the reset lever from the open position to the closed position, the reset lever acting on the trigger disconnector assembly to reset the trigger body and the disconnector in the past-cocked position of the hammer in preparation for securing the hammer in a cocked position preparatory to firing by another trigger pull of the trigger body.

Abstract: A trigger mechanism for a firearm, the trigger mechanism having: a trigger for actuating a hammer of the trigger mechanism, wherein actuation of the trigger causes the hammer to advance to a firing position; and a release configured for movement between a first position and a second position, the release must be first actuated from the first position to the second position and thereafter from the second position to the first position in order to allow for the hammer to advance to the firing position.

Abstract: In at least one embodiment, a firearm trigger group comprises a trigger arranged to pivot on a trigger axis and a hammer arranged to pivot on a hammer axis. A hammer biasing member is arranged to bias the hammer in a predetermined rotational direction. A secondary biasing member is also arranged to bias the hammer. The hammer is moveable from a first position to a second position upon actuation of the trigger. The secondary biasing member counteracts the hammer biasing member in the first position, and cooperates with the hammer biasing member in the second position.

Abstract: A firearm hammer that has its cocking spur attached in a hinged manner that is constantly biased to the closed position. Upon sufficiently applied force, the cocking spur can pivot about the hinge from the closed position to a plurality of open positions, and then due to the constant bias, the cocking spur automatically and rapidly returns to the closed position. In one embodiment, a spring at the hinge causes the constant bias of the cocking spur to the closed position. In the closed position, the cocking spur rests upon the main body of the hammer and is thereby supported to allow the hammer to be cocked. This invention reduces the probability of snagging the hammer on clothing as the firearm is drawn for use. This invention also allows instinctive use of the cocking spur since it is automatically and rapidly returned to the closed position after deviations thereof.

Abstract: A dual stage trigger assembly for a firearm. The trigger assembly comprises a spring loaded lightweight hammer, a spring loaded trigger, a spring loaded disconnector, a spring follower for the disconnector spring and two adjustment screws that allow the user the ability to adjust the sear face of the trigger that is engaged with the hammer in the cocked position and adjust the force imparted to the disconnector by the disconnector spring.

Abstract: A handgun configured with a hammer insert retained within a rear portion of a frame of the handgun, said hammer insert configured for bearing loads imparted thereto during cocking and firing sequence. And a hammer insert for use in conjunction with a frame of a handheld firearm, the hammer insert configured for sliding insertion into the frame from a rear face thereof, and configured for pivotally supporting a hammer.

Abstract: Catches and trigger apparatus for use with weapons are described. An example trigger apparatus for use with a firearm having a breech block includes a latch moveable between a blocking position that blocks the breech block and a non-blocking position that does not block the breech block. The latch includes a sear arm and a securing element movably coupled to the sear arm. The securing element to enable, with a securing device in a securing position. The latch to be moved to the non-blocking position by a retracting breach. The securing device movable by an advancing breech block to position the securing element adjacent a surface of the securing device in the securing position to secure the latch in the blocking position.

Abstract: A firearm firing system substantially reduces the force necessary to fire the weapon yet enhances its ability to remain safe when a firing command is not issued. The sear and hammer interact at two distinct locations so as to reduce the force necessary for the sear to be removed from the sear ledge of the hammer resulting firing of the weapon. By redistributing forces to a secondary point on the hammer during firing the primary sear/hammer interaction can be maintained during non-firing modes to safe the weapon. Additionally a cavity is presented at the sear/sear ledge interaction such that residue and foreign material are removed so not to interfere with the firing mechanism.

Abstract: Firing assemblies for use with firearms are described. A firing assembly for use with a firearm includes a hammer pivotably coupled to a hammer shaft. The hammer includes a hammer stop notch that at least partially engages a portion of a lever of a trigger assembly when the hammer is in a cocked position and a control curve section that engages a surface of the lever to retain the lever in an unlocked position as the hammer moves between the cocked position and a firing position. Additionally, the firing assembly includes a control element pivotably coupled to the hammer shaft and adjacent the hammer, wherein the control element includes a first control curve portion that at least partially adjoins the control curve section and wherein the hammer interacts with the control element to change a control curve region as the hammer moves between cocked position and the firing position.

Abstract: A hammer spring assembly comprises a spring and a member operatively coupling the spring and a hammer of a firearm when the hammer spring assembly is connected to a firearm. The hammer is biased by the spring to rotate forward toward a cartridge or firing pin. The spring exerts a bias force on the member in the forward direction, which urges the member against a curved rearward surface of the hammer at a hammer contact point. As the hammer rotates rearward, the hammer contact point moves along the rearward hammer surface so as to cause a desired variation of an effective lever arm about the hammer pivot point of the bias force exerted on the hammer. Methods comprise connecting the hammer spring assembly to a firearm, or providing the hammer spring assembly and instructing a user to connect it to a firearm.

Abstract: A hammer spring assembly comprises a spring and a member operatively coupling the spring and a hammer of a firearm when the hammer spring assembly is connected to a firearm. The hammer is biased by the spring to rotate forward toward a cartridge or firing pin. The spring exerts a bias force on the member in the forward direction, which urges the member against a curved rearward surface of the hammer at a hammer contact point. As the hammer rotates rearward, the hammer contact point moves along the rearward hammer surface so as to cause a desired variation of an effective lever arm about the hammer pivot point of the bias force exerted on the hammer. Methods comprise connecting the hammer spring assembly to a firearm, or providing the hammer spring assembly and instructing a user to connect it to a firearm.

Abstract: Catches and trigger apparatus for use with weapons are described. An example trigger apparatus for use with a firearm having a breech includes a latch moveable between a blocking position that blocks the breech and a non-blocking position that does not block the breech. The latch includes a sear arm, a spring assembly, and a securing element moveable between a first position and a second position. The spring assembly is to bias the securing element. In the first position, the securing element is positioned at a distance from the sear arm and a surface of a securing device in a securing position to enable the latch to be moved to the non-blocking position and the breech to retract relative to the weapon. In the second position, the securing element is positioned adjacent the sear arm via the breech and the surface of the securing device in the securing position to secure the latch in the blocking position.

Abstract: A trigger system for a firearm has an enclosure having a bottom surface, a trigger pivoted at a first pivot axis within the enclosure, a firing hammer pivoted at a second pivot axis within the enclosure, the firing hammer spring-loaded to rotate clockwise to fire, the firing hammer having a first notch, a disconnector pivoted at the first pivot axis, the disconnector rocker having a hook for engaging the first notch in the firing hammer preventing firing while engaged, and a full auto rocker pivoted at a third pivot axis through the trigger, the full auto rocker having a first portion extending downward and forward from the third pivot axis and a second portion extending rearward from the third pivot axis, a part of the second portion overlying a contact point on the disconnector to the rear of the first pivot axis.

Abstract: A trigger mechanism having a sear block engaging a striker of a firearm, a pivot drop piece supporting the sear block in an over center configuration, a toggle sear supporting the pivot drop piece and engaging a finger piece via a set of sear surfaces, the toggle sear having a toggle sear fly weight, such that when pressure is applied to the finger piece to overcome the sear surfaces friction, the finger piece releases the toggle sear, the pivot piece collapses and allows the sear block to release the cocking piece or striker, wherein during the collapsing motions, movement of the toggle sear is initially damped by kinetic resistance of the fly weight, and later, completion of the collapsing motions are assisted by inertia stored in the fly weight, providing full disengagement of the sear block from the striker.

Abstract: A dual stage trigger assembly for a firearm. The trigger assembly comprises a spring loaded lightweight hammer, a spring loaded trigger, a spring loaded disconnector, a spring follower for the disconnector spring and two adjustment screws that allow the user the ability to adjust the sear face of the trigger that is engaged with the hammer in the cocked position and adjust the force imparted to the disconnector by the disconnector spring.