Aug 26, 2025
A remote operated mechanism is provided for raising and lowering a seal in a gun loader breech via a transfer gear. The mechanism includes a servo motor, a pinion, a clutch and a worm gear. The servo motor axially rotates the pinion. The clutch controllably engages and disengages with the pinion. The worm gear couples the clutch to a shaft that engages the transfer gear. The clutch disengages the pinion from the motor in response to recoil from firing the gun. The worm gear includes a worm screw that axially turns with the pinion and a worm wheel that engages the worm screw to laterally spin a shaft connected to the transfer gear. The clutch includes a coupler for engaging the worm screw, a spur gear that connects the coupler to the pinion, and a spring that pushes the coupler to engage the worm screw prior to firing.
Aug 19, 2025
A firearm comprises a frame having a barrel and defining a passage registered with the barrel, with a bolt configured to reciprocate in the passage between a forward battery condition and a retracted condition. A latch that is movable between a retention position in which the bolt is prevented by the latch from moving from the retracted position to the battery position, and a release condition in which the bolt is prevented by the latch from moving from the retracted position to the battery position. The latch is biased to the retention position such that the bolt is retained in the retracted position after every shot; and an actuator connected to the latch and configured to move the latch to the release condition.
Aug 19, 2025
A firearm spade grip assembly can comprise a firearm, paddle trigger assembly, and/or a mounting system. A paddle trigger assembly can comprise a base spanning between and comprising a base forward end and a base aft end; a paddle trigger coupled to the base; a trigger actuator coupled to the base; and/or an actuator housing coupled to and extending forward from the base, wherein the trigger actuator is disposed at least partially within the actuator housing. Movement of the paddle trigger can be configured to translate the trigger actuator. A mounting system of a firearm spade grip assembly can comprise a mounting base configured to couple to a firearm receiver base or a firearm receiver of the firearm.
Aug 19, 2025
A hand-held gun having a grip part and a breech part movably supported in a longitudinal direction thereon is disclosed. A breech spring arrangement urges breech part in its initial position relative to grip part. For this purpose, breech spring arrangement is supported between the breech part and grip part. Starting from the initial position, breech part can move against the closing force of breech spring arrangement into an abutment position in which it abuts against a buffer body. Starting from the abutment position, breech part can be moved under elastic compression of buffer body in the longitudinal direction into a retracted position. In the movement area between the abutment position and the retracted position, a compression force is applied by the compressed buffer body in addition to the closing force of the breech spring arrangement between the grip part and the breech part.
Aug 12, 2025
A recoil system is deployed with a slide plug comprising a catch means along with a plug retainer comprising a catch means. The slide plug catch means and plug retainer catch means may be compatible to permit the slide plug catch means and the plug retainer catch means to interfit and hold the recoil system in a partially compressed configuration. A method comprising a step of interfitting a slide plug catch means with a plug retainer catch means to hold the recoil system in a partially compressed configuration is described.
Aug 12, 2025
In some embodiments, a fire control mechanism comprises a trigger, a hammer and a disconnector. The trigger comprises a trigger sear and is arranged to rotate about a trigger axis. The hammer comprises a hammer sear and a secondary sear and is arranged to rotate about a hammer axis. The disconnector comprises a disconnector sear and is arranged to move with respect to the trigger. The fire control mechanism comprises an orientation wherein the trigger sear contacts the hammer sear and the secondary sear contacts the disconnector sear.
Aug 5, 2025
A control mechanism of a volumetric dispenser forming part of a gunpowder dosing device, enabling adequate volume control of the gunpowder compartment for easy and accurate dosing of gunpowder. The control mechanism includes a holder with a fastening element attached to the gunpowder compartment and a recess for receiving limiting means, an outer and an inner member, each with a gear section and a synchronising pinion connecting the gear sections. The outer member is coaxially fixed to the head of an adjusting screw. The slide is connected to the adjusting screw. The outer member has a scale and a window for displaying units on a measuring scale. The surface of the outer circumference has shallow grooves which the limiting element engages when the outer member is displaced a fraction of a turn. The inner member has the measuring scale displaying the displacement of the outer member by one complete turn.
Jul 29, 2025
The present disclosure provides systems and techniques for a fire control mechanism that is implementable in a gun. The fire control mechanism is operable to cause projectiles to be fired by the gun. The gun may include a trigger, a barrel defining a bore axis, a firing component, and an actuator configured to i) obstruct the firing component while in a default position and ii) be displaced in a direction that is substantially perpendicular to the bore axis in response to movement of the trigger, where displacement in the direction that is substantially perpendicular to the bore axis causes the firing component to be released and results in the gun firing a projectile. The gun may include an energy store located below the barrel when the gun is in an upright position, and the actuator may be displaced based on the energy store.
Jul 29, 2025
The present disclosure provides systems and techniques for testing guns by simulating firing a round of live ammunition. A striker may be used to apply force onto a gun, and one or more compressible rods may be used to modulate the application of force onto the gun. A system may include a striking mechanism configured for displacement along an arcuate path of travel that includes a first compressible rod, a second compressible rod coupled with a first component of the gun, an attachment mechanism coupled with a second component of the gun such that the second compressible rod is located in the arcuate path of travel, and a backstop mechanism coupled with the attachment mechanism. The attachment mechanism may stably hold the gun and the backstop mechanism may accommodate planar movement of the attachment mechanism, so as to simulate a shooter holding the gun.
Jul 22, 2025
A sighting system for a firearm and related methods are disclosed. The sighting system has front and rear flip-up sights, wherein the front sight comprises a flip-up portion having an aperture through which a sight post can partially extend; a knob comprising one or more notches on a first side and the sight post extending from a second side; at least one detent arranged to face and interact with the one or more notches. The knob is configured to rotate about a first axis, where the rotation causes the sight post to move in a first direction along the first axis; tilting of the knob in a second direction based on the detent interfacing with the notches; and tilting of the sight post in the second direction, thereby forcing at least a portion of the sight post to press against the aperture, or a combination thereof.
Jul 15, 2025
The present disclosure describes a foldable firearm that collapses into a folded state under spring pressure. The foldable firearm may include a foldable grip assembly. The foldable grip assembly may include a foldable pistol grip, a foldable trigger assembly, a folding bar, and a foldable hand stop. The foldable grip assembly may fold into the top shell of the foldable firearm. The foldable firearm may also include an ambidextrous charging handle assembly that may include a bottom portion, a top portion, a guide bar, and two opposing charging handles. The charging handles may be pulled to unfold the foldable firearm, and/or butterflied such that pivoting one charging handle causes the other charging handle to pivot. The first-pivoted charging handle may then be pulled rearwards to unfold the firearm. The first-pivoted charging handle may then be pulled further rearwards to rack the slide of the foldable firearm.
Jul 8, 2025
A delayed blowback system for a firearm is provided. The system includes a bolt with two detent members operatively coupled within the bolt, each detent member comprising a detent. The system further includes a recoil spring guide rod having two matching recesses on opposing sides of the recoil spring guide rod, wherein the bolt and the two detent members are coupled to and slidable along the recoil spring guide rod between a firing position and a recoil position. The firing position includes the detents resting in the matching recesses on the recoil spring guide rod in response to a round being fired, the bolt moves back and pushes the detent members back, wherein by nature of a geometry of the detents and the matched recesses, the detent members outward in opposite directions and perpendicular sliding along the recoil spring guide rail in the recoil position to complete a recoil cycle.
Jul 1, 2025
Embodiments of the present disclosure relate to trigger mechanisms for firearms. In one aspect of the present disclosure, the trigger mechanism can include a linkage between a striker sear and a main sear to control an amount of force exerted on the main sear by the striker sear. A portion of the force exerted on the striker sear by the striker can be exerted on the main sear through the sear linkage. In another aspect of the present disclosure, trigger mechanisms are described which additionally, or alternatively utilize one or more biasing members to provide a variable trigger pull weight.
Jul 1, 2025
A gun has parts that slide past one another during operation. A coating is formed on at least a surface of a first part that contacts a second part. At least an upper layer of the coating is porous and comprises a thermoset polymer and a filler. One or both parts may be part of a gas-operated reloading mechanism. The coating prevents jamming by excluding particles, yielding to particles that still manage to intrude, and by providing a reservoir for lubricant. The coating reduces clearances, improves accuracy, and reduces operating temperatures. The coating excludes particles from the lubricant, effectively allowing a large volume of lubricant to be used without the drawback of trapping dirt and other contaminants in the lubricant.
Jun 24, 2025
The present disclosure relates to an automatic or semiautomatic pistol including a slide and a magazine. The magazine feeder includes an actuator that controls a slide stop. The slide stop, located rearward of the magazine, is designed to switch from a low to a high position. In its high position, the slide stop locks the slide in a rearward position. The pistol also includes a control lever for the slide stop, which is attached at one end to rotate about a pin forward of the magazine. The control lever includes a feeler that is lifted by the control actuator when the magazine is empty, causing the slide stop to switch from its low to high position. The slide stop may have ambidextrous manual releases rigidly connected to each other across the pistol.
Jun 24, 2025
In some embodiments, a fire control mechanism comprises a hammer, a trigger and a safety. The hammer is rotatable about a hammer axis. The trigger is rotatable about a trigger axis and arranged to contact the hammer. The safety is arranged to interfere with rotation of the trigger. The safety comprises a second portion moveable with respect to a first portion.
Jun 24, 2025
A firearm platform and method of connecting an upper receiver to a lower receiver. The upper receiver has a pivot lug and a takedown lug with perimeter openings in opposite directions. The lower receiver has a locking member that pushes against the takedown lug which causes the upper receiver to displace forward. As a result of the forward displacement, a pivot pin in the lower receiver exerts an opposing force against the pivot lug. The locking member is displaced between a locked and unlocked position through a lever located on an exterior surface of the lower receiver. When the locking member is in the locked position, the lower receiver and uppers receiver form a connection that is tight and free from slop.
Jun 24, 2025
A hydraulically dampened rotary barrel locking system for a handgun is provided which preferably includes a receiver, a barrel and a spring-loaded moveable slide. The barrel comprises one or more axially aligned locking lugs configured to allow the slide to travel down the barrel axis when the lugs align with a keyway slot in an extended lug boss at the discharge end of the slide. Felt recoil is reduced and accuracy is improved due to a more balanced slide-to-barrel mass ratio than prior art and hydraulic dampening between the barrel and slide due to improved journal bearing action.
Jun 24, 2025
A gas block for a firearm may include a body, a barrel bore extending from a first end to a second end of the body and configured to receive a portion of a barrel therein, a gas tube bore extending from the first end toward the second end and configured to receive a portion of a gas tube therein, a gas port extending from the barrel bore to the gas tube bore, and an alignment aperture extending from the gas tube bore to a top side of the body and coaxial with the gas port, with the alignment aperture being configured to allow visualization of alignment of the gas port with a barrel gas port of the barrel.
Jun 10, 2025
A firearm, including a hammer, a safety lever configured to select an operation mode, a trigger, an electromechanical sear, wherein the operation modes include an electromechanical mode, and the firearm is configured so that when changing to the electromechanical mode the safety lever moves the position of the hammer to be held by the electromechanical sear instead of by the trigger. Likewise when changing the operation mode from the electromechanical mode to other modes the safety lever moves the position of the hammer so that the hammer. is released from the electromechanical sear and held by the trigger.
Jun 10, 2025
The techniques described herein relate to methods and apparatus for a magazine release for a firearm. The magazine release includes an arm configured to engage with a magazine on a first side of the magazine, and an actuator operatively coupled to the arm and configured to transition the arm from a first position to a second position when actuated, wherein in the first position the arm is engaged with the magazine to hold the magazine and in the second position the arm is disengaged from the magazine, wherein the actuator is configured to be accessible from both the first side of the magazine and a second side of the magazine opposite the first side.
Jun 3, 2025
A trigger mechanism assembly for a firearm provides a horizontal arrangement of its sear relative to a trigger of the firearm by way of a linkage bar. The sear and a disconnector share a pivot point, wherein at each engagement surface between the pivot point and the sear and the disconnector, respectively, there is a bearing. A pair of mandibles is provided, one mandible by each of the sear and the disconnector. A spring is operatively associated between the sear and the disconnector to bias them to rotate about the pivot point dependently, whereby a first distance between the pair of mandibles is maintained. An inclined surface is provided along at least one mandible so that a downward force urged by a hammer against the inclined surface moves the disconnector independently of the sear, whereby a second distance between the pair of mandibles is greater than the first distance.
May 27, 2025
A mechanism using flexure hinges as part of the trigger and/or safety mechanism of a firearm. Flexure hinges provide relative motion between two stiff members by the elastic deformation of an arbitrarily shaped flexible connector often implemented in metallic and composite materials. The flexure hinges are formed by flexure links connecting two stiff members. The flexure links connect various parts of the trigger assembly, such as a trigger component, including a shoe, plate, or safety, to a housing of the firearm. A method of creating the mechanism provides a trigger component, a housing, and connects the two parts by a flexure link with a flexure hinge.
May 27, 2025
A breechblock assembly for a firearm includes a breechblock extending along a central axis and configured to reciprocate along a receiver of the firearm between a recoil position and a battery position. A lever on the breechblock is movable from a blocking position to a non-blocking position in response to the breechblock moving from the recoil position to the battery position. A spring biases the lever to the blocking position. When the lever is in the blocking position the lever prevents the firearm from firing.
May 27, 2025
An open frame revolver may have an upper frame and lower frame pivotally connected together, an opening located in between the upper frame and the lower frame. A spring assembly may be located in the lower frame and a trigger assembly located in the lower frame, wherein the trigger assembly is connected to the spring assembly. A tension axle located in the lower frame, wherein the tension axle on one end connected to the trigger assembly and spring assembly and on the other end has a lock. A hammer axle may be located inside a drum, wherein the drum could be pivotally supported by hammer axel and hammer axle may have a lock on one end. A hammer may be located outside of the upper frame connected to the hammer axle, a safety lock located in the lower frame, while a frame lock located on the lower frame.
May 20, 2025
An operating system for a firearm includes a trigger, a hammer, a disconnector, a pivoting arm, and a lower member. The trigger includes a lower portion, an upper portion, and a trigger pivot. The disconnector includes a lower portion, an upper portion, and a disconnector pivot. The pivoting arm includes a forward protrusion, a pivoting arm opening, and a pin extending through the pivoting arm opening. The lower member includes a lower member opening and a pin hole that is coaxial with the trigger pivot and the disconnector pivot. At least a portion of the trigger and at least a portion of the disconnector are disposed within the lower member opening. Motion of the trigger causes the forward protrusion of the pivoting arm to engage a bolt carrier group and hold the bolt carrier group in an open position.
May 6, 2025
A recoil buffer assembly for cushioning the impact of recoiling components of a firearm. The recoil buffer assembly comprises a first spring, a second spring, and a buffer. The first spring extends along a first axis. The second spring extends along the first axis. The buffer is positioned between a first end of the second spring and a second end of the first spring. The first spring is configured to act between the buffer and a bolt within the firearm. The second spring is configured to act between an end of the firearm and the buffer. A receiver assembly and firearm comprising the recoil buffer assembly are also included.
May 6, 2025
A feeder door of a feeder of a machine gun, the feeder including a feeder housing and the feeder door spring-loaded and pivotally coupled via a pivotal coupling to the feeder housing between at least an open position and a closed position, the feeder door comprising a base including a slot; a retainer lever; and a pivotal coupling independent of the feeder door and feeder housing pivotal coupling configured to spring-load and pivotally couple the retainer lever to the feeder housing between at least a stowed position with the retainer lever retracted in the slot of the base of the feeder door and a deployed position with the deployable portion extending outwardly from the slot of the base feeder door.
Apr 29, 2025
A firearm is disclosed. The firearm contains a lower receiver containing a first opening, wherein the first opening is configured to accommodate a firing mechanism, an upper receiver removably coupled with the lower receiver, a barrel removably coupled with the upper receiver, a bolt carrier assembly positioned within the upper receiver, wherein the bolt carrier assembly is movable between a locked position and an unlocked position, wherein the bolt carrier assembly contains a rear surface, wherein the rear surface of the bolt carrier assembly is positioned between the barrel and the first opening when the bolt carrier assembly is in the locked position.
Apr 22, 2025
A supplemental propulsion system for a weapon used to fire a projectile includes a barrel and chamber to hold a projectile round. A translating pressure tank surrounds a portion of the barrel, and the pressure tank is configured to translate along the barrel. A recoil spring assembly includes a spring and a pressure plate downstream of the chamber for holding the projectile round. The pressure tank is coupled to the pressure plate such that the spring is configured to stretch upon firing of the projectile and translate the pressure tank along a length of the barrel. The barrel includes a first port configured to selectively align with a first tank port during translation, for the discharge of pressurized gas from the pressure tank. The discharge of pressurized gas occurs rearward of the projectile as it passes through the barrel after firing.
Apr 22, 2025
A trigger assembly includes a housing a sear moveably connected to the housing; and a trigger piece connected to the housing and moveable between a cocked position and a firing position; the trigger piece including a trigger shoe configured to contact a user in moving from the cocked position to the firing position; the trigger piece being configured to rotate about a first axis of rotation and an orthogonal second axis of rotation in moving from the cocked position to the firing position.
Apr 15, 2025
A trigger mechanism that can be used in AR-pattern firearms has a hammer, a trigger member, a disconnector, a locking member, and a “three position” safety selector having safe, standard semi-automatic, and forced reset semi-automatic positions. In the standard semi-automatic position, rearward movement of the bolt carrier causes rearward pivoting of the hammer such that the disconnector hook catches the hammer hook, at which time a user must manually release the trigger member to free the hammer from the disconnector to permit the hammer and trigger member to pivot to the set positions so that the user can pull the trigger member to fire the firearm. In the forced reset semi-automatic position, rearward movement of the bolt carrier causes rearward pivoting of the hammer causing the trigger member to be forced to the set position, the safety selector preventing the disconnector hook from catching the hammer hook, and thereafter when the bolt carrier reaches the substantially in-battery position the user can pull the trigger member to fire the firearm without manually releasing the trigger member. The locking member is pivotable between a first position at which the locking member mechanically blocks the trigger member from moving to the released position and a second position at which the locking member does not mechanically block the trigger member allowing the trigger member to be moved to the released position. The locking member is spring biased toward the first position and moved against the spring bias to the second position by contact from the bolt carrier during forward movement of the bolt carrier as the bolt carrier reaches a substantially in-battery position.
