Abstract: A lower receiver for an AR15 type firearm is provided comprising a non-detachable magazine movable in the receiver between a first locked position where the firearm is ready for use (i.e. cocked and ready for firing) and a second non-operational position where the magazine is lowered sufficiently to open a window or aperture in the receiver enabling the user to load fresh shell cartridges into the magazine. A locking mechanism also is provided for controlling the position of the non-detachable magazine between the first and second positions. A child-proof lock further is provided to prevent undesired activation of the locking mechanism. Additionally, a novel locking plate disposed between the lower receiver's frame and the receiver's stock extension tube provides enhanced support for the extension tube and an accessory attachment point for a shoulder strap or sling.

Abstract: Weapon and rifle systems and methods with integral or non-removable ammunition well or reservoir are described. A lower receiver for an M16 type weapon or rifle system is described with an aperture for loading one or more cartridges into an ammunition well or reservoir formed as part of the lower receiver, a pull channel, a follower pull coupled to the pull channel, a follower adapted for retraction by the follower pull, a bottom cover to the ammunition well or reservoir, wherein the pull channel and follower pull are capable of retracting the follower past the aperture for loading one or more cartridges into the ammunition well or reservoir. Also described is a weapon or rifle system using the lower receiver described herein and a method for loading a weapon or rifle system using the lower receiver as described herein.

Abstract: A dummy cylinder for a revolver that permits dry fire practice but does not permit the insertion of live ammunition. The dummy cylinder approximately duplicates the outer dimensions of a normal cylinder so that it may replace the normal cylinder for safer training. It may use the extractor and ratchet of the revolver or may be constructed to simulate the dimensions of those parts. It may contain integral firing-pin cushioning devices, or may be constructed to allow the insertion of such devices while preventing the insertion of live ammunition.

Abstract: The bolt hold-open system is a firearm bolt locking or holding mechanism for an AK-47 or similar firearm capable of automatically keeping the bolt of the firearm in an open position when the firearm magazine is empty. The bolt hold-open system includes a locking assembly and a modified magazine. The bolt hold-open system also provides a manual control for keeping the bolt in an open position and for releasing the bolt. The system prevents the bolt carrier from closing while there is an empty magazine in the gun, but can be easily activated to release the bolt when the magazine is removed or a non-empty magazine is in the magazine receiver. The system requires minimal modifications to the firearm and magazine and is easily adaptable to firearms similar to the AK-47 that fire ammunition in a wide range of calibers and configurations.

Abstract: A high feed ramp for use in Colt 1911 style handguns including a feed ramp on the frame (receiver) for guiding bullets into the barrel of the gun; a boiler room (barrel breech) with a small chamfered around its entire inner circumference; and an integral relief rim extension on the upper edge of the feed ramp, such that the feed ramp is extended over the bottom edge of the chamfered boiler room; wherein when the handgun is fired the bullets easily enter into the barrel and do not jam or misfire.

Abstract: Integral extensions to aid in the extraction of ammunition magazines from ammunition pouches are provided in three embodiments. In this embodiment, the sides of an ammunition magazine are extended, either by molding or affixing a handle directly to the sides of the magazine, to provide a handle. This embodiment provides a more steam-lined handle adapted for use specifically in the extraction of magazines from ammunition pouches and other storage means.

Abstract: A firearm, such as a handgun, rifle, machine gun, etc. has a frame assembly having a barrel defining a cartridge chamber and includes a magazine for serially positioning cartridges at a pickup location relative to said frame assembly and barrel. A reciprocating member, such as a slide or bolt is provided in the firearm assembly for moving cartridges from said pickup location into the cartridge chamber of the barrel and for extracting the cartridge cases of spent cartridges from the cartridge chamber and ejecting them from said firearm. The reciprocating member is machined to define a breech face recess. A cartridge specific breech face element is removably secured within the breech face recess to adapt the firearm to fit a cartridge of desired caliber and configuration. The breech face element can be provided in specifically desired dimensions to compensate for wide tolerances or wear of the reciprocating member.

Abstract: In a firearm having a trigger assembly with a trigger nose, a hammer with a sear hook and a trigger notch, a disconnector and an automatic sear, an improvement including a notched bifurcating the sear hook of the hammer for receiving the disconnector in a past-cocked position. Further improvements include the trigger notch being offset rearwardly from a center of the pivot point resulting in a slightly changed angle away from an acute engagement angle with the trigger nose.

Abstract: The invention provides an apparatus for reducing recoil on a firearm or gun and to increase rate of firing. The invention uses a dual mass system to dynamically balance the gun wherein some of the energy of firing is absorbed within springs and thereby reduces the recoil force imparted to the gun user. The apparatus also comprises an ejector mechanism for ejecting a spent round and reloading a new round from the gun magazine with increased speed over conventional designs. The apparatus is applicable to automatic and semiautomatic handguns as well as rifles and machine guns.

Abstract: An externally adjustable coil hammer mainspring assembly for pistols having several different mechanisms for clearing obstructing internal and external pistol design features. These mechanisms make it possible to incorporate external coil hammer mainspring adjustment on many popular pistols. Finger-adjustable drive mechanisms (44, 46, and 30) as well as tool driven drive mechanisms (12) are provided to allow the pistol user to adjust coil hammer mainspring tension. This capability allows the user to adjust trigger-pull and hammerfall force in the field and provides a locking safety mechanism which locks down the pistol firing train including the trigger, sear, hammer and hammerstrut.

Abstract: A repeating rifle having a chamber to which a magazine guide is secured by means of threaded bolts, into which magazine guide a bar magazine can be inserted, can selectively receive a longer magazine. In order to make this possible with a minimum of parts and manual operations, there is provided an adapter which fits onto the chamber or onto a stock and is secured by means of bolts which are screwed into threaded bores in that end of the threaded bolts which faces away from the chamber.

Abstract: Reliability of a multi-lug breech bolt is improved by modifying the bearing relationship between the bolt lugs and the matching lugs within a gun receiver. This procedure is applied to a gun that has a receiver housing a breech bolt and an extractor. The extractor is coupled to the breech bolt and configured to move relative thereto. The bolt for this gun has at least five radially extending bolt lugs configured for bearing contact with the receiver when positioned for firing. The bolt lugs include a first, second, and third bolt lug with the first and second bolt lugs being adjacent and defining a gap configured to receive the extractor therebetween. The third bolt lug extends from the bolt opposite the gap. Stress imparted to the first and second bolt lugs from firing the gun is reduced by altering the gun to prevent formation of a bearing relationship between the third bolt lug and the receiver when the bolt lugs are positioned for firing. The gun is reassembled as part of the procedure.

Abstract: An ammunition transport for use in a repeating weapon includes a transition component that presents a pair of converging sloped surfaces so that cartridges provided in a side-by-side fashion from a cartridge magazine may be transferred to a cartridge chamber of the weapon.

Abstract: A firearm frame constructed of plastic material having slide rail guidance members in the forward, central and rear portions of the frame. The frame is useful with a barrel unit which is cammed back and down by slide reciprocation and by a cam block which with barrel movement being arrested by the walls of a frame cavity. Forces and energy created in arresting such back and down movement of the barrel and block is transferred to the frame by the block hitting the frame cavity. A slide stop pin passing through openings in the frame and cam block also assist in transferring energy to the frame. Forces causing the slide to move upward during the arresting of barrel and block is prevented buy the rail guidance members. The trigger rotates about a trigger trunnion located in such frame cavity below the cam block.

Abstract: The present invention relates to an improvement to individual firearms; the technical field of the invention is that of manufacturing firearms. A firearm includes a pin extending crosswise into the magazine well, mounted at at least one of its two ends in a respective recess provided in the left or right side walls of the magazine well; said pin extends inside said magazine case, passes through at least one of the left or right side walls of said magazine in which an orifice is provided; said pin is situated in the immediate vicinity of a bottom abutment limiting the stroke of said cartridge lift, i.e. it is situated at a short distance from said abutment, as measured along the longitudinal axis ZZ in which the cartridges are stacked.

Abstract: A detachable multiple round ammunition magazine with improved "X" shaped magazine spring and improved latching mechanism.

Abstract: A removable ammunition magazine has a body with a side wall. The body defines a passage sized to hold ammunition and an opening intersecting the passage. The opening is sized to pass ammunition therethrough and includes a notch in the side wall. A follower is moveably positioned within the passage for positioning beneath ammunition placed within the passage. A magazine spring yieldingly urges the follower toward the opening. A bolt catch actuator is coupled to the follower. The actuator includes an actuation finger carried with the follower and an activation spring in contact with the finger. The spring projects the finger through the notch when the follower is aligned with the notch. A fire arm with a magazine having a bolt catch actuation finger movable relative to the follower is also disclosed.

Abstract: A manually actuated rifle which maintains the aesthetics of a semi-automatic rifle, but which is incapable of semi-automatic or automatic fire. A piston guide member is provided which has at least one aperture therein for preventing actuation of the action by gas pressure.

Abstract: A bolt action rifle of simplified, economical and durable construction resembling an assault rifle is disclosed. An elongated action tube connected between a barrel and stock houses and guides the bolt in all positions of the latter. A unified housing member attached to the action tube defines a magazine having communication with the interior of the action tube and a mounting for a simplified firing and safety mechanism involving a minimum number of parts.

Abstract: A repeating firearm includes a bolt carrier and bolt assembly which are movable relative to each other to provide for locking and unlocking the bolt with respect to the barrel breech. An elongated bearing plate is supported by the bolt and movable with the bolt to maintain a cartridge to be next inserted into the barrel chamber in a predetermined position until the bolt is substantially fully retracted to prevent premature movement of the cartridge upon movement of the bolt carrier only. The bolt carrier and bolt assembly are interconnected by a cam mechanism including a helical cam slot formed in the bolt carrier and a cylindrical pin type cam follower engageably with the bolt.