A pistol chassis is disclosed which may include a lower housing, an upper housing, a proximal enclosure, a distal sleeve, and a proximal accessory. The distal sleeve, lower housing, and upper housing may be secured together to form a tubular member for receiving a pistol. The lower housing further may include a distal segment, a proximal segment and an intermediate segment. Time distal segment may include a pistol frame receptacle and a trigger guard enclosure. The proximal accessory may be a folding stock. The pistol chassis may house a pistol to produce a firearm apparatus.

A stabilizing device for a small arms weapon is disclosed. The stabilizing device may include a housing, a starboard side support member, a port side support member, and a primary hinge pin. The primary hinge pin, the starboard side support member, and the port side support member may form a joint. The stabilizing device further may include a webbing. The webbing may include one end secured to the starboard side support member and another end secured to the port side support member. The webbing may form a sling. The sling may be configured and dimensioned to rest on a body disposed between the first base and the second base. The body may be the forearm of an operator grasping the small arms weapon in a single hand. In one embodiment, the stabilizing device for a small arms weapon is connected to a pistol chassis.

A firearm training device is disclosed that may include a body member having a grip. The barrel section may include a muzzle end and a rear or butt stock end. The barrel section may include a transverse aperture adjacent one of the rear/butt stock end. The firearm training device may include a stretchable loop exercise band disposed through the transverse aperture and connected to the body member. The body member may be in a variety of shapes, such as a hand gun or a rifle. The stretchable loop exercise band is adapted for being wrapped around a person's torso so it can be used to perform exercises to strengthen the person's ability to grip a firearm.

A firearm support system includes a receiver body comprising an upper wall comprising a strap slot and a strap carried by a strap bar, the strap being configured for passage through the strap slot and the strap bar being configured to be received within the strap slot.

Various solutions to aide in the one-handed usage of certain types of firearms, such as pistols/handguns, are described. Each solution is a type of stabilizer that aids in stabilization of a large pistol, such as an AR pattern pistol, against the forearm of the user. By adding an additional point of contact for the firearm, greater stability is achieved, thus allowing for safer and more accurate operation of the firearm. Various implementations in accordance with the present disclosure allow for easy ambidextrous use without sacrificing stability.

Disclosed methods, systems, and apparatus provide multiple-position slings and hands-free carrying devices for equipment, hand guns, shoulder weapons, military-style tactical firearms, etc. Systems include adjustably attaching into a garment, a single-point sling with a slider strap and slider for repositioning a detachable lanyard, e.g. to attach a shoulder weapon. Methods for using systems for a single-point sling for a long gun, include holstering the gun supported by a loop of the lanyard detachably attached to the slider in a front-holstering position, e.g. at a user's secondary side under the arm. Embodiments include drawing the long gun forward, the loop of the lanyard supporting the long gun proximate a stock, grip or single-point receiver plate mount of the long gun, and shouldering the gun with the stock against a shoulder, the slider positioned at a shooting position of the slider strap of the single-point sling system.

A firearm retaining harness is described comprising a shoulder portion and a transverse member. The shoulder portion is worn around a shoulder of an operator, while the transverse member wraps around the operator's chest. The shoulder portion and the transverse member may be releasably coupled to one another for putting on and removing the harness. A coupling slidably engages the transverse member on a first side, while is releasably coupled to a firearm on a second side. Because the coupling is slidably coupled to the transverse member, an operator may quickly move the firearm between a storage, ready, and active position. Since the transverse member is elastic, it is pulled taught when in an active position such that positive pressure is provided to the operator. Such positive pressure may reduce an amount of recoil, as well as provide stabilization during discharge of the firearm and faster target acquisition.

A pistol brace for a pistol having a frame with a rear end portion and defining a median plane longitudinally through the pistol. The pistol brace has a longitudinal support configured to attach to and extend rearwardly from the pistol frame. A first plate and a second plate are pivotably attached at an upper end portion to the longitudinal support and extend down from the support in opposed alignment. The first plate and second plate can pivot independently of each other. Optionally, a flexible strap is connected to the first plate and second plate. The strap defines an adjustable passageway for the user's forearm.

The invention pertains to a speargun, comprising a barrel having an oblong body and a spear track for directly receiving a spear, the spear track being formed as a channel on the outer surface of the barrel, a handle unit connected to the barrel, and a trigger unit for releasing the spear through activation of a finger trigger, wherein the barrel is constructed as a single piece having an oblong barrel body comprising a hollow interior space, wherein a reinforcing bar is provided inside the hollow interior space, the reinforcing bar running essentially a length of the barrel body. The invention also pertains to a speargun wherein a housing containing the trigger unit has a window through which the trigger mechanism of the trigger unit is at least partly visible from an outside and a speargun wherein fixation means are provided for fixing the handle unit in different positions along the barrel.

The invention pertains to a speargun, comprising a barrel having an oblong body and a spear track for directly receiving a spear, the spear track being formed as a channel on the outer surface of the barrel, a handle unit connected to the barrel, and a trigger unit for releasing the spear through activation of a finger trigger, wherein the barrel is constructed as a single piece having an oblong barrel body comprising a hollow interior space, wherein a reinforcing bar is provided inside the hollow interior space, the reinforcing bar running essentially a length of the barrel body. The invention also pertains to a speargun wherein a housing containing the trigger unit has a window through which the trigger mechanism of the trigger unit is at least partly visible from an outside and a speargun wherein fixation means are provided for fixing the handle unit in different positions along the barrel.