Abstract: A firearm blast reduction device installable on a muzzle of a firearm may include a lock device, a muzzle device and a muzzle shroud. When assembled together, the muzzle shroud faces a front side of the firearm and the muzzle device faces a rear side of the firearm, with the lock device received in the muzzle device and between the muzzle device and the muzzle shroud. To install, the muzzle shroud is rotated in one direction to lock the firearm blast reduction device on the muzzle. To uninstall, the muzzle shroud is rotated in an opposite direction to release the firearm blast reduction device from the muzzle.

Abstract: A gun scraper tool has elements that are adapted to maintain firearms. More specifically, a gun scraper tool can have several components and scraping surfaces that can be used to disassemble a firearm and/or to scrape carbon and residue off of the appropriate areas of the firearm by using scraping surfaces. The gun scraper tool can have a roughly triangular housing and a plurality of tool components and scraping surfaces that use the housing as the base. The tool components and scraping surfaces can include a spindle, an exterior scraping blade, a pivoting brush have a base and a set of bristles, a cotter pin puller, a bolt tail brush having bristles, and a bolt carrier scraper. The variety of tasks capable of being accomplished with the disclosed gun scraper tool can minimize the need for additional cleaners or tools.

Abstract: The current system is a method for easily attaching firearm devices to the end of a firearm. The system is used to improve the relative alignment between firearm devices and the bore of the firearm. The system solves the problem of non-uniformity when attaching devices to a firearm, by providing a uniform mounting surface. The system includes three main parts: a muzzle extender, a device, and a clamping method. The extender includes a threaded female receptor for attaching to the firearm muzzle and a clamping surface to be used with a clamping method to attach the device. The system has multiple embodiments including, built in muzzle devices, different clamping methods, and multiple devices to attach to the system.

Abstract: Apparatus, systems, and methods for the maintenance, repair, modification, cleaning, disassembly, and reassembly of firearms and firearm components are disclosed. Particular embodiments include tools to aid in the removal and insertion of an extractor pin from the bolt assembly of an AR-15 or M-16 rifle. Preferred embodiments are directed to bolt assemblies for .223 and .308 imperial caliber firearms, as well as 5.56 and 7.62 metric caliber firearms. The tools include a housing with a channel to receive the bolt, a channel to insert a locking rod to orient and secure the bolt in the housing, a channel for inserting a removal rod to remove the extractor pin from the bolt or an inserting rod to insert the extractor pin into the bolt.

Abstract: A barrel clip of unitary plastic construction is used to securely clip onto the barrel of a firearm and simultaneously is able to hook the firearm to a non-human support such as a fence when, during hiking and/or hunting, there is a need for the hiker and/or hunter to be hands free and out of contact with his/her firearm. This lightweight, inexpensive inventive barrel clip helps prevent clogging and dirtying of the firearm barrel. Further it does not cause damage to the environment in which it is used. It is easily stored in a pocket, on the barrel of the firearm, or clipped onto some convenient item being taken on the hike and/or hunt.

Abstract: A bullet velocity enhancing rifle attachment assembly a sleeve having a first end, a second end and a perimeter wall. The sleeve has an aperture therein extending into the first end and outwardly of the second end. The aperture is defined by an inner wall including a first portion adjacent to the first end, an second portion adjacent to the second end and a central portion positioned between the first and second portions. The central portion has an toroidal shape. A coupler attached to the second end of the sleeve is releasably engageable with a gun barrel to align the aperture with the gun barrel. Pressure from a front side of a bullet traveling down the gun barrel is forced into the central portion to travel around the toroidal shape and back into the aperture toward the first portion, behind the bullet, as the bullet travels through the central portion.

Abstract: A system for connecting an accessory to a firearm having a muzzle device has a plurality of swinging arms pivotally connected to a body. The swinging arms releasably engage a portion of the muzzle device. The swinging arms are operable for movement between a closed position and open position. The swinging arms have a retention feature sized to receive a rear portion of the muzzle device when the swinging arms are in the closed position. The swinging arms have a locking mechanism that releasably secures them together to prevent movement of the swinging arms to the open position, so that the accessory may be removed or installed when in the open position, and secured when in the closed position. A bore of the body may closely receive at least a portion of the muzzle device.

Abstract: A method for releasably attaching a compensator assembly adjacent a muzzle end of a barrel of a firearm. The compensator assembly includes an attachment means on its rear end. The barrel has a firing axis and includes a threaded end opposite the muzzle end and defines a recess formed adjacent the muzzle end. The firearm itself has a frame defining a threaded aperture. The method includes moving the attachment means into engagement with the recess; tensioning the attachment means within the recess in a direction substantially parallel to the firing axis; inserting a mating tool into the muzzle end of the barrel; rotating the barrel via the mating tool, thereby causing the threaded end of the barrel to threadedly engage with the threaded aperture; and halting the rotation of the barrel via the mating tool when a predetermined torque is achieved.

Abstract: A multitool for a firearm provides a frame adapted for storage within a handgrip cavity of a firearm and a plurality of tools rotatably mounted to the frame to move from within the frame to extending from the frame as a result of being rotatably mounted, wherein the plurality of tools are adapted for use to rehabilitate the firearm under predetermined malfunction conditions.

Abstract: One embodiment of the invention sets forth a cartridge design that includes a bullet having a larger diameter than the 0.224 inch bullet currently included in the 223 Remington or 5.56 mm NATO cartridge and a case that has substantially the same base diameter as the case currently included in the 223 Remington or the 5.56 mm NATO cartridge. The overall length of the disclosed cartridge is substantially similar to the overall length as the 223 Remington or the 5.56 mm NATO cartridge.

Abstract: A gun barrel adaptor includes a body having a central bore therethrough and including a flange, the flange having a hole therethrough, the body having a lower side on one side of the flange and an upper side on another side of the flange; a flat spring attached to a lower side of the flange; a stop disposed in the hole in the flange and extending above an upper side of the flange, the flat spring being operable to resist movement of the stop towards the lower side of the body; and at least one locking tab disposed on the upper side of the body. The gun barrel adaptor provides for quick change modularity of muzzle devices without the use of any special tools.

Abstract: A semiautomatic pistol adapted to repetitively fire blank ammunition includes a frame, a barrel slidably mounted to the frame, a slide slidably mounted to the frame and adapted for reciprocal longitudinal movement relative to the frame between a forward battery position and a rearward position and an occlusion member at least partially positioned within a longitudinal bore defined in the barrel for generating sufficient back pressure in the barrel to move the slide rearwardly to the rearward position thereof. The occlusion member defines a length ranging from about 15% to about 60% the length of the barrel.

Abstract: A Quick Muzzle Loading Rifle is provided that consists of a barrel extension that is threaded into a frame and a short barrel that is pivotally attached to the frame and can pivot between a position in-line with the barrel extension and a position to the side of the frame. When pivoted to the side of the frame, the short barrel is loaded. Once loaded, the short barrel is placed in-line with and forced toward the barrel extension which causes the short barrel to contact a gas seal that ensures leak-tight communication between the short barrel and the barrel extension. While in this configuration, the Quick Muzzle Loading Rifle is capable of being fired. A Quick Loader functions to load the Quick Muzzle Loading Rifle and consists of a main cylinder, a cylinder top, and a cylinder base. The main cylinder bounds, in its interior, a plurality of cylindrical storage cavities.

Abstract: A variable caliber self-loading pistol has a slide carried by a breech block slide of the gun with this slide projecting forwardly of the breech block slide so as to support the underside of a cartridge during initial rearward movement of the breech block slide as that cartridge is being extracted from the chamber. The slide also assists in preventing premature movement of a fresh round of ammunition upward from a magazine into the chamber.

Abstract: A firearm cartridge headspace gauge consisting of a threaded cylindrical barrel and threaded head is machined internally to precisely match the external dimensions of a given firearm cartridge. A scale is provided on the gauge barrel and mating head. When a cartridge is inserted into the barrel and the head is installed to the point at which the interior of the head contacts the cartridge, the scale may be read to determine any difference from the optimum headspace for that type and caliber of cartridge. Varous sizes of cartridge headspace gauges may be produced so as to conform precisely to the dimensions of any cartridge desired. The gauge provides a method of quickly and precisely checking the exact headspace of any cartridge, whereupon the cartridge may be resized as necessary after removal from the gauge.

Abstract: A locked breech mechanism for a firearm having a trigger, cylinder, and hammer and in which the cylinder is adapted to accommodate cartridges such as a bottleneck cartridge. The breech mechanism includes a breech member disposed between the hammer and cylinder in combination with an operating member. The breech operating member is in the form of a yoke member having a rest position in which the breech member is disengaged from a cartridge in the cylinder, and an active position in which the breech member is engaged with and locked against the cartridge.

Abstract: A firearm has a barrel assembly and a breech block pivotally mounted with respect to the barrel assembly. The barrel assembly has a barrel block and a pair of barrels mounted in over and under relationship. The breech block has a generally forwardly projecting water table. Locking elements are provided for retaining the barrel assembly and breech block in desired relative relationship for firing with a portion of the locking elements being on the barrel assembly and a portion being on the breech block. In one embodiment rearwardly projecting key elements on the barrel assembly engage recesses on the breech block. A lever stem cooperates with shell head support members through cam means to urge the shell head support members forwardly when the firearm is in the firing position. Inertia firing pins may be provided in the shell head supports and intermediate firing pins may be provided in the lever stem.

Abstract: Disclosed is an interchangeable barrel for small arms of the type having sliding breechblocks, comprising a housing with a guide surface inclined downwardly to the rear, for releasing the barrel during recoil. In order to mount the interchangeable barrel in the weapon without any play, the barrel has an adjustable spreading element which can be wedged against the declining guide surface of the weapon.