Abstract: In an embodiment, a low-force, low-friction, short-travel, low-energy control rolling trigger utilizes a rolling element as a trigger-release mechanism in equipment, machines and tools such as for clutches, brakes, actuators, and projectile launchers. The rolling elements within the trigger mechanism reduce the friction, which in-turn reduces the force necessary to discharge trigger. In an embodiment, the trigger is part of a firearm and uses a mechanical trigger. In another embodiment, the trigger is activated by an electronic signal that activates a solenoid, which pulls the rolling element, and thereby releases the striker or in a trigger-release assembly.

Abstract: A spring is formed of a relatively thin sheet of spring material, which is constricted and held in place at each end forming a bell curve being located between two substantially planar members. As additional compressive force is applied in the vertical direction, the curve then compresses and starts to form sine waves. In an improved embodiment of the present invention, the sine wave spring is formed in a wedge shape, so that it is gradually taller and more progressive. This embodiment has been tested for use as a trailer spring with positive results. This wedge-shaped sine wave spring provides even more advantages over the Prior Art. The wedge-shaped prototype illustrates also how the present invention may be expanded to other shapes, in order to alter the spring characteristics, and also for packaging and other concerns.

Abstract: The present invention relates to a trigger mechanism of a repeating rifle, comprising a sear nose (2) that pivots about an axis (9) and a bolt lock (5) which is dedicated to the sear nose (2) and which is connected to a trigger (3) that pivots about a trigger axis (21) and comprises a sear (15) that meshes with a counter-sear (16). To make it possible to change the trigger characteristics simply and easily, the counter-sear (16) is disposed on a stationary sear element (17) and the bolt lock (5) is disposed on the sear nose (2) so as to be pivotable about an axis of rotation (13).

Abstract: An trigger assembly with an improved trigger fit adjustment apparatus located within a 1911 pistol fire control mechanism. The trigger assembly has a trigger bow and a trigger shoe. The trigger shoe is connected to a forward end of the trigger bow. The trigger shoe has a pair of substantially parallel sides, a lower end connecting each of the pair of substantially parallel sides, and a raised pad extending from a top surface. The raised pad has an upper end that is substantially parallel to the lower end. The upper end of the raised pad is vertically spaced from the top surface.

Abstract: A handle assembly and combined interface system for use with a semi-automatic firearm to facilitate controlled bump firing methods. The handle assembly includes a finger rest for the user's trigger finger. The interface system is attached to a receiver of the firearm, and is slideably disposed in the handle assembly for reciprocation. In use, the user pushes a firing unit portion forward with an opposite hand so that its trigger collides with the user's finger, thus stimulating a round of ammunition. Recoil forces the firing unit rearwardly so that the trigger separates from the finger. The user then applies another forward activation force that urges the firing unit forwardly again to repeat the cycle for as long as the user chooses. A lock can be selectively engaged to restrict longitudinal movement of the firearm relative to the handle, thereby returning the firearm to normal semi-automatic functionality.

Abstract: A handle assembly and combined interface system for use with a semi-automatic firearm to facilitate controlled bump firing methods. The handle assembly includes a finger rest for the user's trigger finger. The interface system is attached to a receiver of the firearm, and is slideably disposed in the handle assembly for reciprocation. In use, the user pushes a firing unit portion forward with an opposite hand so that its trigger collides with the user's finger, thus stimulating a round of ammunition. Recoil forces the firing unit rearwardly so that the trigger separates from the finger. The user then applies another forward activation force that urges the firing unit forwardly again to repeat the cycle for as long as the user chooses. A lock can be selectively engaged to restrict longitudinal movement of the firearm relative to the handle, thereby returning the firearm to normal semi-automatic functionality.

Abstract: A firing pin assembly with a firing pin having a shaft with a distal bearing thereon. The firing pin has a standby position, a load position, and a fire position. A cam engages the bearing and is configured to drive the shaft between the standby position and the load position. A spring about the shaft is compressed when the shaft is driven into the load position. A driver turns the cam when energized to drive the shaft from the standby position to the load position and then to turn the cam further whereupon the compressed spring urges the firing pin to fire.

Abstract: A reset apparatus for use in a firearm, comprising: a compression spring; a biasing member has a first end and a distal end wherein the compression spring is attached proximate to the first end of the biasing member; a notch disposed on the biasing member for cooperation with a trigger bar, wherein the trigger bar comprises a longitudinal axis defined by a front portion and a rear portion, wherein the front portion is mechanically cooperated with a firearm trigger; and wherein the compression spring communicates a force through the biasing member and onto the trigger bar in a direction substantially perpendicular to the longitudinal axis of the trigger bar.

Abstract: The invention relates to a trigger mechanism for a firearm, comprising a spring-loaded firing pin which, when in the cocked position, engages on a catch. The catch can be released at a right angle to the direction of the firing pin to fire and can be displaced between the cocked position and a safety position uncocking the firing pin spring along the direction of the firing pin to lock the firearm. The catch slides on an intermediate member when displaced, said member being movable in the direction of release of the catch and engaging on a click-stop edge of a trigger, which click-stop edge can be disengaged to fire.

Abstract: The invention relates to a cocking and uncocking mechanism for a firearm, comprising a spring-loaded firing pin which, when in the cocked position, engages on a catch that can be released to fire, said catch being displaceable by an actuator element acting upon the catch via a link motion the control cam of which maintains the force to be applied to the actuator element to displace the catch to the cocked position substantially constant at least in the center region of the actuation path.

Abstract: A trigger is provided and may be pivotally connected to a frame at or near the top of the trigger. A sear transfer bar may be further provided and is pivotally connected to the frame. The pivot in the trigger is higher within the frame as compared to the pivot of the sear transfer bar. Two balls can be between the trigger and the sear transfer bar. The top of the sear transfer bar has a sear contact. Pulling the trigger in a first direction causes the trigger to rotate in a first direction. The sear transfer bar rotates under force of the trigger. The sear transfer bar and the trigger may rotate in opposite directions. The sear will drop when the sear contact of the transfer bar ceases engagement with the sear, causing the firearm to fire.

Abstract: A method for rapidly firing a semi-automatic firing unit (22) having a trigger (24), a receiver (21) and a barrel (23). The firing unit (22) is placed in a handle (20) so as to enable only reciprocating linear movement along a constrained linear path (P). The user grasps the handle (20) and places their trigger finger (74) firmly on a finger rest (70). In use, the user generates a forward activation force (200) that urges the firing unit (22) forwardly so that the trigger (24) collides with the stabilized finger (74), stimulating the first round of ammunition in the receiver (21). A recoil force (202) from the discharging ammunition pushes the firing unit (22) rearwardly so that the trigger (24) separates from the stabilized finger (74). The intensity of the forward activation force (200) can be varied by the user on-the-fly to proportionally change the firing tempo.

Abstract: Apparatuses and methods for facilitating reloading and resisting recoil of a firearm include an elastic member in communication with a portion of the firearm. A contact member coupled to the portion of the firearm, the elastic member, or combinations thereof, is movable between a first position in which movement of the portion of the firearm is biased by the elastic member and a second position in which movement of the portion of the firearm is generally unaffected by the elastic member. An actuator can be used to move the contact member between the first and second positions.

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 breech device of a hand firearm comprises a firearm casing, a trigger mechanism, a carrier slidably arranged within the firearm casing, and a breech block engaging the carrier and having a firing pin. The breech device further includes a tensioning element slidably engaged with the carrier and coupled to at least one follower pin engaging the firing pin and slidably engaged with the breech block. The tensioning element includes a projecting part having a forward-directed nose adapted to engage a stop detent on the trigger mechanism. The breech device further includes a tensioning pin slidably engaged with the carrier and the breech block.

Abstract: A fire control assembly for a firearm includes a trigger engagement link comprising a forward end, a rearward end, and an intermediate portion. The fire control assembly further includes a sear including a bottom portion engageable with the intermediate portion of the trigger engagement link, and a hammer moveable between cocked and firing positions. The hammer includes a link displacement portion operable to displace the forward end of the trigger engagement link as the hammer is moved from its firing position to its cocked position. The displacement of the forward end of the trigger engagement link by the link displacement portion of the hammer disengages the intermediate portion of the trigger engagement link from the bottom portion of the sear so as to at least temporarily deactivate the fire control assembly.

Abstract: A trigger activated switch for a firearm is disclosed. The switch comprises a Hall-effect sensor configured to be mounted in the housing or frame of the firearm, and a magnet disposed on a retractable member coupled to the trigger of the gun. The trigger comprises a firing module rotatably coupled to the housing to have a range of motion with respect to the housing from a non-firing position to a firing position. The retractable member is moveably coupled to the firing module and articulates between a non-engaged position and engaged position with respect to the firing module. The Hall-effect sensor is attached to the firearm housing in proximity to the magnet when the retractable member is in the non-engaged position. Motion of the retractable member from the non-engaged position to the engaged position causes the magnet to articulate away from the sensor, which then activates an auxiliary device upon sensing motion of the retractable member.

Abstract: Firearms and firearm components are constructed from bonded multi-metallic base materials comprising at least two dissimilar metallic materials having different properties, such as weight, density, wear resistance, durability, hardness, and the like, bonded to one another. The components are fabricated such that the metallic material having higher impact- and wear-resistance is positioned at areas that experience impact, or that include bearing points, wear points, and interfaces with other components, while a lighter weight metallic material is positioned at component locations that don't have rigorous material property requirements. The bonded multi-metallic materials may be explosively bonded multi-metallic materials.

Abstract: A gun comprises a fastening for fastening a safety cord. The fastening is movable between a lowered position and a raised position wherein it defines an accessible opening for fastening the safety cord.

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 novel firearm includes an underarm gun stock. The stock of the firearm is to be positioned under the forearm of the firearm user. Alternatively, the firearm has no underarm stock, but the action and barrel of the firearm are disposed beneath the forearm or the wrist of the user. The novel firearms promote a more steady shot with a single hand, the ability to support heavier firepower in a more compact package, and other advantages not found in prior art handguns or rifles.

Abstract: A multi-function electroshock gun includes a gun body that includes a barrel and a grip extending from the barrel, and a firing mechanism mounted in the gun body and operable to propel a projectile that is fired through the barrel. The multi-function electroshock gun further includes an electroshock unit that includes a battery mounted in the gun body, a set of exposed electrodes fixedly mounted to the gun body, and a discharge module. The discharge module is coupled electrically to the battery and the exposed electrodes and is capable of being activated to generate an electrical output signal at the exposed electrodes for administering electric shock by contact. The multi-function electroshock gun also includes a trigger mechanism mounted on the gun body and operable to activate the discharge module.

Abstract: A bullpup conversion kit for a firearm includes a housing, a forward trigger assembly, a trigger actuator and a linkage connecting the forward trigger assembly with the trigger actuator. The trigger actuator includes a first locator plate, a second locator plate and a cam actuator positioned between the locator plates. The cam actuator includes a primary trigger engagement surface.

Abstract: Provided are systems and methods related to firearm trigger assemblies. An open design trigger assembly is provided to allow easier access to the trigger action. The trigger assembly is preferably an override trigger assembly, which may include adjustable trigger travel limiter and trigger bias force. Methods according to the present invention include a first step of removing either a direct-pull or a closed design trigger assembly from a firearm and replacing such removed assembly with an open design override trigger assembly.

Abstract: A side lock action firearm has a frame with an attached side lock action. The frame includes a rearwardly protruding portion including a mating feature. A stock including a mating element is removably connected to the frame when the mating element is engaged with the mating feature. The mating feature may be a threaded boss. The mating element may be a draw bolt. A forward portion of the stock may be shaped to closely receive the rearwardly protruding portion of the frame. The stock may include a central bore, and the draw bolt may be received by the central bore in the stock.

Abstract: A trigger assembly for a firearm includes a trigger and a trigger spring. The trigger assembly is mounted and retained in a frame of the firearm and, more specifically, in an elongated recess defined by the frame. The frame further defines lateral annular grooves and retaining lips near an opening of the elongated recess. The trigger includes an upper trigger piece and a lower trigger piece that are connected to each other. The upper trigger piece is mounted to the lateral annular grooves and retained by the retaining lips. The lower trigger piece is configured to fit in the opening and protrude from the frame. The trigger assembly also includes a trigger spring, mounted in a spring recess defined in the upper trigger piece, that spring biases the trigger into a resting position by abutting and engaging a trigger bar of the firearm under a torsional compression.

Abstract: A firing mechanism for a sporting rifle includes a piston, a rigid profile, a trigger and a trigger safety catch. A wall is firmly attached to the rigid profile. The trigger and safety catch are on one of the faces of said wall. A first stud is firmly attached to the trigger. A cover partially covers the trigger and safety catch. The cover includes an aperture, in the form of a slider, allowing the first stud to pass through it and for movement of the first stud along the length of the aperture. A slider is arranged over the cover. When the barrel is in the broken position, the slider will block the movement of the stud along the length of the aperture, thus immobilising the trigger. When the barrel is in the closed position, the slider allows movement of the first stud along the aperture.

Abstract: A construction for a firearm comprises an action, including a barrel, and a stock. The action is seated to the stock on a three-point bearing system comprising three bearings arranged in a triangular array. This provides for firm seating for the action and results in a more accurate firearm.

Abstract: A system and method for a trigger insert system is disclosed. One embodiment comprises a trigger module with a hammer within the housing, the hammer having an impact region, a base region including a hammer pivot location, a hammer sear surface and a hammer disconnector, a trigger within the housing, the trigger having a trigger sear surface to engage the hammer sear surface, the trigger being pivotably connected to the housing with a pin, a disconnector pivotably connected to the pin, the disconnector having a disconnector sear to engage the hammer disconnector, the disconnector further having a disconnector adjuster configured to adjust a rotational distance between the disconnector and the trigger, and a safety coupled to the trigger, the having a safety adjuster to adjust the play between the safety and the trigger.

Abstract: A removable trigger guard for a rifle. The removable trigger guard includes a first arm that is disposed between a magazine and a grip of the firearm, a body portion disposed along an upper portion of the grip, and a second arm portion that is disposed along a lower surface of the rifle and between the grip and the magazine. The first arm includes a ball bearing and a detent pin that engage a yoke of the magazine. The body portion includes another ball bearing that snap fits into engagement with a yoke formed in the magazine. The second arm includes an opening that receives a trigger that protrudes from the lower surface. The removable trigger guard can be installed by hand without tools and can be removed with the use of the tip of an ammunition cartridge.

Abstract: Alignment devices for assisting proper location of fingers relative to the triggers of trigger-activated devices, trigger-activated devices, finger position indicating triggers for trigger-activated devices, and methods for activating a trigger-activated device are disclosed. Alignment devices for assisting proper location of a finger relative to a trigger may include a body having a trigger face configured to engage a user's finger, a trigger-engaging region, and a position indicator disposed on the trigger face. The trigger-engaging region may be adapted to couple the alignment device to a trigger of a trigger-activated device. The trigger-engaging region may be configured to position the trigger face in a predetermined position relative to the trigger. The position indicator may be disposed on the trigger face. The position indicator may be configured to provide an indication that at least a portion of the finger is positioned in a predetermined lateral position relative to the trigger.

Abstract: The invention concerns an insertion magazine (2) for a small arm, in particular, a repeating rifle. The insertion magazine (2) is characterized in that a trigger unit (3) with a trigger guard (7) and a trigger (9) is mounted on its underside in such a manner that the trigger unit (3) is removable together with the insertion magazine (2) from the small arm.

Abstract: The invention concerns an insertion magazine (2) for a small arm, in particular, a repeating rifle. The insertion magazine (2) is characterized in that a trigger unit (3) with a trigger guard (7) and a trigger (9) is mounted on its underside in such a manner that the trigger unit (3) is removable together with the insertion magazine (2) from the small arm.

Abstract: A striking mechanism for the semi-automatic operation of a cartridge firing firearm includes a receiver, a barrel attached to the receiver and providing a breach, an op rod assembly, and a bolt adapted for reciprocating movement within the receiver and engagable with the breach of the barrel and the face of a cartridge chambered therein. The bolt carries a primary firing pin, and a bolt lock means is pivotally connected to the bolt for selectively locking the bolt within the receiver. A bolt link assembly is pivotally connected to the bolt lock means and to the op rod assembly. The bolt link assembly provides a bolt link transfer pin. An op rod transfer pin is carried by the op rod assembly and can engage the bolt link transfer pin.

Abstract: A trigger system for a paintball marker has a string attached to the trigger actuator. The string is held taut between the actuator and the trigger guard. The actuator is a lever attached to the string and in contact with a micro-switch that allows the release of compressed air to propel a paintball.

Abstract: Disclosed is a percussion lock installed on a firearm, and more particularly, to a percussion lock wherein the hammer is operated through a link member so that operation of the firearm is possible in a small area, making it possible to design a firearm flexibly and reducing the volume and weight of the firearm. According to the present invention, the percussion lock installed on a firearm to fire a bullet by hitting a firing pin comprises a housing mounted in fixed state to a firearm, a hammer installed on the upper part of the housing for hitting a firing pin, a link member linking the hammer and the housing so that the hammer moves on a curve maintaining horizontal state, and an elastic member supporting the link member with elastic force.

Abstract: The mechanism is simple, with longer service life, and allows for a safe carrying for prolonged periods and quick subsequent shots of the firearms. The striker (1) has a middle enlargement (1b) that is closer to the front enlargement (1c). The rear face of the middle enlargement (1b) serves as a forward rest for the mainspring (4). The forward face is a rear rest for the safety spring (5) with its front part resting on the rear face of the axially floating ring (3) with an internal diameter smaller than the external diameter of the front (1c) and middle (1b) enlargements. The external diameter is greater than the internal diameter of the front enlargement (1c). Between the rear part of the mainspring (4) and the bushing (6) there is a second axially floating ring (2) with an internal diameter smaller than the external diameter of the rear (1a) and middle (1b) enlargements. The spring (12) that returns the trigger (10) is pushing the trigger (10) forward and the trigger bar (14) up.

Abstract: A releasing device for a spring-loaded firing pin (1) or a spring-loaded firing-pin piece, in particular of a firearm, with at least one release trigger (2) that can be activated by hand, in particular, with at least one finger, and with a control body (3) acting on the firing pin (1) or the firing-pin piece. A transmission mechanism is arranged and/or acts between the release trigger (2) and the control body (1), and the transmission mechanism has a series of roller bodies (4) lying one on the other, advantageously balls and/or cylinders.

Abstract: Apparatus for a modular fire control assembly for a firearm. The modular fire control assembly integrates a hammer, a sear, a disconnector, and sear and disconnector springs in a single housing. The force applied by the sear spring is adjustable by a set screw, which enables the sear spring force to be dialed in. The sear spring and set screw are contained in a block in the housing. The sear spring engages a detent that applies spring force to the sear. The sear spring moves in a smooth bore that has a ledge that allows the spring to maintain a minimum force even when the set screw is removed. A self-contained disconnector spring ensures constant spring force on the disconnector regardless of adjustments to the sear spring force. The modular assembly is configured to be received in a lock cavity of the firearm and secured using conventional pins.

Abstract: A handgun converter enclosing a handgun and allowing the user to operate the handgun with full and increased functionality and enhanced safety. The combined weapon endows the handgun with increased stability and accuracy due to additional supports, versatility by adding rails, and with an additional mechanical latch mechanism supporting safe use. The handgun converter is constructed to allow quick mounting and release of the handgun, to enhance weapon versatility.

Abstract: Breech block for a drop-down barrel weapon, having at least one firing pin, which is guided such that it can move axially therein, has an impact head at its rear end for a firing piece to strike, and has a firing tip at its front end in order to fire a cartridge, with a safety slide being guided such that it can move laterally in a recess on the firing piece side of the breech block between a first position in which a portion thereof in the form of a spacer head projects beyond the impact head of the firing pin in the impact area of the firing piece and a second position in which it is withdrawn from the impact area of the firing piece, which recess is at least partially closed by a cover plate with the cover plate having recesses for the impact head and the spacer head to pass through.

Abstract: A compact and foldable survival tool includes a firearm including a trigger and safety lever with many unique features including a compact and folding survival tool with an easy-to-manufacture top strap, a rack and pinion hammer actuator, dual lasers for distress signaling and target and ranging sighting, reconfigurable multiple tools, contained child-safety lock system, folding trigger with safety lever, cam hammer lock, floating firing pin, and cylinder pin assembly positive cylinder lock, for example.

Abstract: A charging handle for a rifle having a housing. The handle has a body with an elongated bar having a forward end and a rear end. The bar has a bolt engaging element at the forward end, and a crossbar having an intermediate portion connected to the rear end of the bar. The crossbar has opposed ends extending laterally of the bar. First and second latch elements are connected to the body. The first latch element has a housing-engaging element that engages the housing when the handle is in a forward position. The first and second latch elements are engaged to each other such that pivoting of the second latch element disengages the housing-engaging element from the housing.

Abstract: The present invention relates to a hand gun with a tensioning lever (cocking lever), connected with the lock, with a handle for cocking the weapon, for which at least two alternative fastening positions are provided for the handle for actuating the tensioning lever. The relative position of the handle for actuating the tensioning lever is changeable on the weapon, so that one can engage for cocking in various positions on either the right hand or left hand side, so that the tensioning lever can be adjusted to fit and be operated by a right-handed or a left-handed person.

Abstract: A firearm training tool having a shot indicating system in further in one form a trigger take-up indicating system. The trigger module is adjustable to adjust various properties of the trigger.

Abstract: The invention relates to the trigger and firing mechanisms for pistols. The inventive pistol comprises a frame (1), a barrel (2) with a cartridge chamber (3), a cartridge feeding mechanism (4), a fired case removing mechanism and a breech block return spring (12). The breech block (13) is slidable parallel to the barrel axis and comprises a firing mechanism, which consists of a firing spring stop (14), a firing spring (15), a striker (16) having a firing pin tip (17), a cocking notch (18) and rest pads for a firing spring (19) and for a striker spring (20). The breech block (13) includes a mechanism for sinking the firing pin tip (17) in a position, which makes possible the chambering of a cartridge, said mechanism having a striker spring (21), the force of which in a precompressed condition is greater than the precompressed force of the firing spring (15). The striker spring stop (22) is installed in the breech block (13) for fixing the precompressed force of the striker spring (21).

Abstract: A firearm having a small trigger pull force, small trigger pull distance, and a large sear engagement is provided. The firearm of the present invention provides a safe firearm having a light and crisp trigger pull. Certain embodiments of the present invention may provide a firearm having a ratio of sear engagement to trigger pull distance that is greater than or equal to 1.0.

Abstract: A device for assisting in the chambering of a handgun that can also serve as a safety device for preventing unwanted firing of the handgun is disclosed. The device comprises a slide pull that includes an elongate laterally flexible structure having a first end configured for being releasably coupled to a first side of a slide of a handgun and a second end configured for being releasably coupled to a second side of the slide. A trigger restraint is coupled to the slide pull near a mid-portion thereof. In a first position, the slide pull is configured for being grasped by a user in order to chamber a bullet. In a second position, the trigger restraint is positioned relative to the trigger to prevent movement of the trigger that would otherwise cause the weapon to fire.

Abstract: A charging handle for a rifle having a housing. The handle has a body with an elongated bar having a forward end and a rear end. The bar has a bolt engaging element at the forward end, and a crossbar having an intermediate portion connected to the rear end of the bar. The crossbar has opposed ends extending laterally of the bar. First and second latch elements are connected to the body. The first latch element has a housing-engaging element that engages the housing when the handle is in a forward position. The first and second latch elements are engaged to each other such that pivoting of the second latch element disengages the housing-engaging element from the housing.

Abstract: An automatic shooting mechanism capable of remote switching and unmanned switching between a safety mode and a shooting mode, and remote shooting and unmanned shooting. Also provided is a sentry robot employing the automatic shooting mechanism and capable of performing wide and narrow monitoring and sentry duties in short and long ranges, and automatically shooting at a target. The automatic shooting mechanism comprises a safety unit including a safety solenoid and an elastic member to move a safety pin of a gun between a safety mode position and a shooting mode position, a return unit for applying force to the safety pin of the gun to move the safety pin to the safety mode position.