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.

A receiver for an AK-47 style firearm includes an upper receiver and a lower receiver. The upper receiver includes a first side element, a second side element coupled to the first side element, a trunnion support formed between the first side element and the second side element proximate a forward end thereof, and a pivot block formed between the first side element and the second side element intermediate the forward end and a rearward end thereof. The lower receiver is hingedly coupled to the pivot block and movable between an open position and a closed position.

A bracket for retaining a disassembled rifle preferably includes a retention bracket and a pair of retractable spring pins. The retention bracket includes a base plate, a first yoke, a second yoke, a first lug and a second lug. The two lugs and the two yokes extend upward from a top of the base plate. A width of the lug slot is sized to receive a lug projection of an upper receiver half of a rifle. The two retractable spring pins are retained in the first and second yokes. The first and second lug holes are sized to receive a spring pin of a lower receiver half of a rifle. A second embodiment of the rifle bracket includes a retention bracket with yokes that extend from a side of a base plate and two lugs that extend from an opposing side of the base plate.

A bracket for retaining a disassembled rifle preferably includes a retention bracket and a pair of retractable spring pins. The retention bracket includes a base plate, a first yoke, a second yoke, a first lug and a second lug. The two lugs and the two yokes extend upward from a top of the base plate. A width of the lug slot is sized to receive a lug projection of an upper receiver half of a rifle. The two retractable spring pins are retained in the first and second yokes. The first and second lug holes are sized to receive a spring pin of a lower receiver half of a rifle. A second embodiment of the rifle bracket includes a retention bracket with yokes that extend from a side of a base plate and two lugs that extend from an opposing side of the base plate.

A method of improving the mechanical communication between two firearm components. The method embodies shim tape having a thin metallic layer with adhesive along one surface. The shim tape may be adhered along an interface between the two firearm components so as to fill space therebetween, thereby increasing their mechanical communication whereby associated wobble is minimized.

A striker fired semi-automatic pistol or handgun that utilizes a magazine positioned horizontally and in front of the grip. The pistol of the invention includes two recoil springs and two locking lugs positioned on each side of the barrel (1 per side) which has a corresponding set of locking blocks. A sliding stripper rail is utilized to move cartridges from the magazine to the barrel. The grip is detachable and completely customizable, using a small solid tang to connect the grip to the firearm.

A firearm having a lower receiver including a takedown pin through hole and an upper receiver configured to receive the lower receiver. The upper receiver including a rear lug and the rear lug including a bore and a screw disposed in the bore. A takedown pin having a cam surface such that the upper receiver is drawn to the lower receiver as the takedown pin is inserted in the takedown pin through hole and the bore of the rear lug.

Methods, systems, and apparatuses for interchangeable, customizable, and suitable grips for firearms are described. In some embodiments, the grip includes two components, a grip base piece and an interchangeable grip (e.g., an interchangeable grip attachment) of the firearm user's choice. The grip base piece attaches to the lower receiver held by a pistol grip screw and a lock washer. In some examples, the grip base piece may only be installed once, for example, initially prior to implementation of interchangeable grips (e.g., the grip base piece may not require any other attention or installation changes after the initial placement onto the lower receiver). Following the installation of the grip base piece on the lower receiver, interchangeable grips of users' choice may be connected to the grip base piece (e.g., and interchanged with other interchangeable grips) via utilizing a grip interface (e.g., a T-shaped mating tab of the interchangeable grip).

In broad embodiment, the present invention is a set of sprung pins, operated by paddles, used to facilitate the assembly and disassembly of a firearm. While the foregoing written description of the invention enables one of ordinary skill to make and use what is considered presently to be the best mode thereof, those of ordinary skill will understand and appreciate the existence of variations, combinations, and equivalents of the specific embodiment, method, and examples herein. The invention should therefore not be limited by the above described embodiment, method, and examples, but by all embodiments and methods within the scope and spirit of the invention.

In broad embodiment, the present invention is a set of sprung pins, operated by paddles, used to facilitate the assembly and disassembly of a firearm. While the foregoing written description of the invention enables one of ordinary skill to make and use what is considered presently to be the best mode thereof, those of ordinary skill will understand and appreciate the existence of variations, combinations, and equivalents of the specific embodiment, method, and examples herein. The invention should therefore not be limited by the above described embodiment, method, and examples, but by all embodiments and methods within the scope and spirit of the invention.