Abstract: A monocular unit permits visualization of image data received from an imaging device associated with a mobile computing device. The image data is displayed on a display of the mobile computing device. A trigger unit indicates a trigger actuation, where the trigger unit includes a trigger and a trigger bar, and where the trigger bar is moved by actuation of the trigger. A mounting component mounts the mobile computing device in relation to the monocular unit and the trigger unit. Adjustment wheels permit adjustment of the position of the mobile computing device in relation to the monocular unit, the trigger unit, and the mounting component.

Abstract: Embodiments of the invention provide a fracture fixation device and method for treatment of a bone fracture. The fracture fixation device includes a main body having a recess formed therein, and a compression element is configured to be received in the recess. The compression element has a passage dimensioned to receive a fracture fixation pin. A compressive force is generated across the bone fracture upon the compression element receiving the fracture fixation pin to promote healing of the bone fracture. The fracture fixation device is an external fixator that provides adjustable aspects of compression, rotation, and length in a simple design that facilitates bone healing by compression.

Abstract: A pump gun (10) comprises a barrel (11), a main stock part (12), a fore stock (12) supported in longitudinally displaceable manner and is linked to a breech lock (17) which, in the closed position of the pump gun (10), can be made to engage the rearward barrel end (21). The breech lock (17) and the fore stock (12) are linked to each other in a manner that upon displacing the fore stock (12), the breech lock (17) can be driven in the opposite direction to that of the fore stock (12). As a result, the pump gun (10) may be safely operated without recourse to a stop and, in the ready to fire initial state, is devoid also of any pumping excursion gap. The invention moreover offers a weapon matching marksman ergonomics and esthetics in its closed or ready to shoot state.

Abstract: A grenade launcher includes a frame, a barrel mounted on the frame and an opening mechanism. The opening mechanism includes a guide which enables advancement of barrel in a longitudinal direction of the frame and swiveling of the barrel laterally in the final phase of its longitudinal movement.

Abstract: Apparatus 10 comprises a receiver body 12 along with a trigger 14 for activating the firing mechanism and a lever 16 for opening the breech assembly to allow access to the chamber for receiving the shell/cartridge 56 at the rear of the barrel 18. The barrel 18 is secured to the breech 28 by an extension lug 58 having an internal transverse hole 61 therein which receives the extension lug pin 59 therein as the extension lug is inserted into the slot 60 on the top portion of the breech block 28 so that the breech can be opened and closed by lever 16. Also shown is the cartridge/shell 56 extractor 62 which comprises an extractor pin 68 along with an extractor spring 70. The barrel 18 comprises a front barrel support 64 and a rear barrel support 66 which each have a lower flange 65 thereon which slides to the front and rear in slot or track 67 in response to pressure from the barrel pin 72 and barrel spring 74 which occurs after the lever 16 is operated to free the barrel 18 from the breech block 28.

Abstract: Apparatus 10 discloses a receiver body 12 along with a trigger 14 for activating the firing mechanism and a lever 16 for opening the breech assembly to allow access to the chamber for receiving the shell/cartridge 56 at the rear of the barrel 18. FIG. 1 shows the breech block 28 and barrel 18 closed and FIG. 2 shows the breech block 28 and barrel 18 open. Also shown is the action bar 20 having a front portion for contacting the rear of the firing pin 22 and forcing the firing pin forward so as to contact the primer 55 of the shell/cartridge 56. The firing pin 22 has a firing pin spring 26 thereon which is mounted in a hole in the breech block 28. The action bar 20 is supported by upper and lower supports 30 near its front end along with upper and lower support pins 31 which also act as a rear spring stop near its mid-section having main spring 24 and front spring stop 25 thereon. Also shown on the action bar is internal, transverse slot 38 and notch 48 on its bottom surface.

Abstract: A firearm apparatus includes a gun housing which includes a barrel support channel between a front gun housing portion and an intermediate gun housing portion. A reciprocating barrel is housed inside the gun housing and includes a piston-sleeve-contained barrel portion slidingly received in a piston sleeve which is housed in the front gun housing portion and in front of the barrel support channel. Proximal portions of a barrel piston head, the piston-sleeve-contained barrel portion, and the piston sleeve form a pressure space into which a portion of high pressure combustion gasses from a fired cartridge enter. The high pressure gasses propel the barrel forward until the barrel piston head reaches the end of the piston sleeve. Then, a recoil spring returns the barrel to its original position. As the barrel moves back and forth, a fresh cartridge is automatically loaded from a magazine into a barrel chamber portion, the cartridge is fired, and the spent cartridge is automatically discharged.

Abstract: A forwardly movable assembly for a firearm, the forwardly movable assembly adapted to be disposed in operative relationship relative to the other operative parts of a firearm, the firearm having in operative relationship each with one or more of the others: a barrel, a receiver, and at least one firing mechanism; the forwardly movable assembly comprising: the barrel and the receiver operatively connected with each other; a movable hand support structure to which at least one of the barrel and the receiver is connected, the barrel being movable therewith, the movable hand support structure being adapted to be gripped by an operator of the firearm; the forwardly movable assembly being adapted to be moved forward by an operator upon gripping the movable hand support structure and manually maneuvering the hand support structure forwardly; and, as the forwardly movable assembly is moved forwardly, the firing mechanism is completely disengaged therefrom and held substantially stationary relative thereto.

Abstract: A floating barrel gun design, a design in which a propellant gas discharge is used to counterbalance the recoil force of the gun, has been improved to include a novel automatic mechanical mechanism which allows the floating or inner barrel to be held stationary within the gun while the gas is discharged and after the discharge is complete, the barrel is released to return to its pre-actuation position. The discharge of gas is also made safer by an automatic mechanical mechanism for venting the accumulated gas, and this mechanism is activated as the projectile leaves the gun. The mechanism requires that the gas be discharged into the interior of the gun and the recoil-countering gas streams be directed toward a rearward moving breech block.

Abstract: A training firearm that provides a realistic recoil effect. The firearm, preferably a pistol, may be an actual firearm retrofitted with a self-contained “blow back” assembly. Usually, the pistol will include a laser device that emits a laser beam readable by a target system. The laser replaces live rounds, and the blow back assembly causes return of the slide to cycle in a manner similar to that caused by live ammunition in an unmodified weapon. The blow back assembly is driven by a disposable cartridge of compressed gas self-contained in the handle of the pistol. A valve integrated with the firing pin releases a burst of gas when the firing pin is impacted by the hammer. The gas pushes back the slide and recocks the hammer for the next “round.” This system provides law enforcement and military personnel a realistic tool to develop recoil management and target re-acquisition skills.

Abstract: A semi-automatic handgun is disclosed including a frame having a barrel housing mounted thereon. A barrel is movably mounted on the barrel housing and has a cartridge chamber at its rearward end for receiving a cartridge therein. The barrel is movable between a rearward position and a forward position with respect to the barrel housing and is normally in its rearward position. The barrel moves forwardly in a straight line from its rearward position upon firing of the cartridge in the chamber to counteract the rearward energy of discharge, thereby reducing recoil. The handgun may be fired in either a single action or double action manner. The firing hammer of the handgun is re-cocked, upon firing of the cartridge, by means of a movable piston having a firing pin positioned therein with the firing pin engaging the hammer to move the hammer to its re-cocked position.

Abstract: The break action cannon invention disclosed herein enables weaponization and integration of complex fire control systems concurrent with projectile loading operations in a gun system such that superior firing cycle and efficient power and thermal management are achieved. A barrel is detachably shifted and tipped at an angle to accept a projectile while propellant charge supply systems and other firing preparations proceed simultaneously.

Abstract: A break open sporting firearm with one to four barrels that lock up in line directly behind the chambers for strength and rigidity.The load from firing is taken up by two or more circularly spaced lugs in the breech engaging with mating lugs on the frame.A rotating breech plate slider and hinge within the breech are the functioning means for this invention.

Abstract: The break action cannon invention disclosed herein enables weaponization and integration of complex fire control systems concurrent with projectile loading operations in a gun system such that superior firing cycle and efficient power and thermal management are achieved. A barrel is detachably shifted and tipped at an angle to accept a projectile while breech operations and other firing preparations proceed unencumbered.

Abstract: A pump action shotgun including a main housing, a breech having a main bore and a sleeve within the main bore. A barrel has its rear end telescopically received within the sleeve, the barrel being axially movable from a rear firing position in close proximity to the breech to a forward loading position. The barrel is connected to the sleeve through a pin and groove arrangement so that axial movement of the barrel causes rotational movement of the sleeve. The sleeve being connected to the various mechanisms of the shot gun to operate these when it (the sleeve) is rotated.

Abstract: A handgun of the drop barrel type has an over-length firing pin coupled with a "pile-driving" barrel action that permits the firing of rifle load cartridges. A micro-precision timing sequence of the action causes the rearwardly propelled cartridge disposed in the floating drop barrel chamber to strike the fixed firing pin while the barrel is still in its rearwardly moving direction. In the preferred form of the invention a spring driven actuator sleeve surrounding the barrel interiorly of a receiver tube propels the barrel rearwardly such that the cartridge is ignited and the bullet discharges from the barrel prior to the seating of the barrel against a breech plate that is integral with the gun frame. Gases escaping and expanding from the cartridge are captured by the barrel and actuator sleeve and cooperate with the inertia created by the falling barrel to lock and seal the barrel chamber against the breech plate.

Abstract: The disclosed firearm comprises a stationary receiver or frame, a breech ck pivotally mounted at its lower end on the receiver and engaging a forward-facing abutment on the receiver in firing position, a barrel slidably mounted near its forward end on the receiver and pivotally connected at its rear end to the upper end of the breech block. Forward movement of the barrel to open the breech at the rear of the barrel bore during firing is prevented by the pivotal connection and the firing reaction on the breech block. The barrel can be moved forward after firing to move the rear end thereof forward and downward to open the breech. The firearm also includes a barrel latch automatically released by the hammer during firing, an extractor-ejector member actuated by the breech block during the opening of the breech, and a hammer-cocking means also actuated by the opening of the breech.

Abstract: The disclosed firearm comprises a stationary receiver or frame, a breech ck slidably mounted in the receiver and engaging a forward-facing abutment on the receiver in firing position, a barrel slidably mounted on the receiver for rectilinear and transverse motion at its rear end, interlocking abutments on the barrel and receiver engaged by the transverse motion for locking the barrel to the breech block in firing position. Forward movement of the barrel to open the breech during firing is prevented by the locking abutments and the firing reaction on the breech block. The barrel and breech block can be moved forward after firing to disengage the interlocking abutments and open the breech. A manually-operated extractor-ejector member is disclosed.