Abstract: A module having a housing, a battery, control circuitry and electrical conductors. The battery and control circuitry are contained in the housing. The housing is adapted to be removably connected to the frame of a firearm. The electrical conductors are located on the housing and allow the battery and control circuit to be electrically connected to other components of the firearm. The housing can be connected at a hand grip section of the firearm and forms a substantial portion of at least one exterior side of the firearm at the hand grip section.

Abstract: A gun and a base unit such that the gun cannot be fired unless the gun comes in close contact with the base unit and the base unit determines that an authorized person is holding the gun and interfacing with the base unit. The base unit pre-records and stores characteristics of authorized persons and unauthorized person and compares these data with the person interfacing with the base unit. The gun must be gripped to be activated by the base unit and if it is put down, the gun is no longer capable of being fired. The base unit can use multiple means of identifying an individual and a process is described for combining the results from the multiple sources to determine if a person is an authorized person above a selectable threshold of probability. The base unit can also develop a probability that the person attempting to use the gun is a specified unauthorized person. Thresholds of being an authorized person or not being an unauthorized person can be adjusted.

Abstract: A module having a housing, a battery, control circuitry and electrical conductors. The battery and control circuitry are contained in the housing. The housing is adapted to be removably connected to the frame of a firearm. The electrical conductors are located on the housing and allow the battery and control circuit to be electrically connected to other components of the firearm. The housing can be connected at a hand grip section of the firearm and forms a substantial portion of at least one exterior side of the firearm at the hand grip section.

Abstract: An adapter for converting the receiver of a rifle to one which receives a cartridge housing rounds of a shorter length, said adapter comprises a body defined by four walls two of which walls defining the front and rear walls of the adapter and two of which walls defining left and right side walls of the adapter. Each of said walls defining a secondary receiver chamber sized to receive a magazine cartridge of rounds a shorter length than otherwise provided for in a rifle. The adapter includes a mechanism which cooperates with a retention catch of a rifle to effect registration of the adapter with the rifle and for allowing the magazine cartridge to be releasably connected to the adapter.

Abstract: A pistol with a frame, a barrel and a firing mechanism. The firing mechanism includes a pivotably mounted hammer having a first hammer member and a second hammer member stationarily interlocked in a pocket of the first hammer member. The firing mechanism also includes a trigger assembly with a trigger member and a spacer pivotably mounted to the frame in a slot of the frame. The barrel has a lug on its bottom rear end that is movably mounted to the frame by a lug pin. A rear end of the lug has a contoured shape to accommodate the top of the trigger and a front of a pull bar being moved under the barrel. A handgrip panel is mounted to a handgrip section of the frame by a single fastener. The panel and handgrip section have cooperating angled surfaces to also mount the panel to the frame.

Abstract: A firearm comprising a receiver, a barrel and a gas block. The barrel is connected to a front end of the receiver. The gas block is clamped onto the barrel. A gas tube extends between the receiver and the gas block, and the gas block includes a keyway which engages a key piece on the barrel.

Abstract: The invention relates to a lock system for firearms whereby an inexpensive, reliable and easy to use locking system is provided as part of a firearm and involves the formation of an opening formed in a strategically located part of the trigger assembly. The opening is appropriately sized and shaped to receive a conventional standard lock having a movable shank which is open and placed through the strategically placed opening in the trigger assembly and thereafter locked in place to affect the inoperative condition of the firearm. The lock can also be mounted as part of a holster which prevents inadvertent firing and removal of the firearm.

Abstract: A module having a housing, a battery, control circuitry and electrical conductors. The battery and control circuitry are contained in the housing. The housing is adapted to be removably connected to the frame of a firearm. The electrical conductors are located on the housing and allow the battery and control circuit to be electrically connected to other components of the firearm. The housing can be connected at a hand grip section of the firearm and forms a substantial portion of at least one exterior side of the firearm at the hand grip section.

Abstract: A module having a housing, a battery, control circuitry and electrical conductors. The battery and control circuitry are contained in the housing. The housing is adapted to be removably connected to the frame of a firearm. The electrical conductors are located on the housing and allow the battery and control circuit to be electrically connected to other components of the firearm. The housing can be connected at a hand grip section of the firearm and forms a substantial portion of at least one exterior side of the firearm at the hand grip section.

Abstract: A known gas operated firearm has been modified to be of more compact size and reduced weight while retaining the firepower, the features, and most of the components of its predecessor. A bolt assembly reciprocably mounted in a longitudinal cavity of a receiver assembly for movement between recoil and battery positions has a forwardly facing pressure surface and first and second longitudinally extending coaxial bores. The annular flange of a firing pin is slidable in the second bore and the bolt assembly includes a transversely extending retaining pin engageable by the annular flange to define an aftward terminal position of the firing pin. A recoil assembly includes a pair of tungsten weights mounted in the longitudinal cavity for rectilinear movement with the bolt assembly between the recoil and battery positions and includes means to bias the bolt assembly toward the battery position.

Abstract: A pistol with a frame, a barrel and a firing mechanism. The firing mechanism includes a pivotably mounted hammer having a first hammer member and a second hammer member stationarily interlocked in a pocket of the first hammer member. The firing mechanism also includes a trigger assembly with a trigger member and a spacer pivotably mounted to the frame in a slot of the frame. The barrel has a lug on its bottom rear end that is movably mounted to the frame by a lug pin. A rear end of the lug has a contoured shape to accommodate the top of the trigger and a front of a pull bar being moved under the barrel. A handgrip panel is mounted to a handgrip section of the frame by a single fastener. The panel and handgrip section have cooperating angled surfaces to also mount the panel to the frame.

Abstract: A firearm with a trigger, a hammer, an automatic sear, and a selector switch connected to a rotatable firing control cam for selecting among types of firing selections of the firearm. The types of firing selections include safe, semi-automatic, limited automatic burst, and fully automatic. The control cam has a section with a general cross-sectional mushroom shape that is contacted by a leg from the automatic sear. The leg has a bend and extends under a center of the control cam in at least two positions of the control cam.

Abstract: A known gas operated firearm has been modified to be of more compact size and reduced weight while retaining the firepower, the features, and most of the components of its predecessor. A bolt assembly reciprocably mounted in a longitudinal cavity of a receiver assembly for movement between recoil and battery positions has a forwardly facing pressure surface and first and second longitudinally extending coaxial bores. The annular flange of a firing pin is slidable in the second bore and the bolt assembly includes a transversely extending retaining pin engageable by the annular flange to define an aftward terminal position of the firing pin. A recoil assembly includes a pair of tungsten weights mounted in the longitudinal cavity for rectilinear movement with the bolt assembly between the recoil and battery positions and includes means to bias the bolt assembly toward the battery position.

Abstract: A module having a housing, a battery, control circuitry and electrical conductors. The battery and control circuitry are contained in the housing. The housing is adapted to be removably connected to the frame of a firearm. The electrical conductors are located on the housing and allow the battery and control circuit to be electrically connected to other components of the firearm. The housing can be connected at a hand grip section of the firearm and forms a substantial portion of at least one exterior side of the firearm at the hand grip section.

Abstract: A firearm with a frame, a slide, a striker, and a striker retaining system. The striker is connected to the frame inside the slide. The striker has a firing pin biased by a spring in a forward direction. The retaining system has a retainer pin and a spring. The retaining pin is mounted to the frame and is adapted to automatically engage the striker when the slide is removed from the frame. This prevents the striker from being inadvertently released as a projectile off of the frame when the slide is not mounted to the frame.

Abstract: A combined handgrip and trigger guard for a firearm has a handgrip section and a trigger guard section. Preferably, the handgrip section and trigger guard section are provided as an integral one-piece polymer member. The trigger guard section extends from the handgrip section in a general cantilevered configuration. A free end of the cantilever trigger guard section has an integral pin section that is located in a hole of a frame of the firearm. Locating the free end of the trigger guard section against the frame with the pin section in the hole of the frame is the only direct connection of the trigger guard section to the frame and does not use additional fasteners directly between the trigger guard section and the frame.

Abstract: A pistol with a barrel assembly having a barrel, a barrel rib, and a front sight. The barrel rib is removably connected to the barrel. The front sight is stationarily connected to the barrel by entrapment of a portion of the sight by the rib against the barrel. The entrapment by the rib is the sole connection of the sight to the barrel and barrel rib.