Abstract: A trigger module is particularly suited for use with firearms having an upper receiver and a lower receiver which are connected in an operable condition and may be separated to expose a trigger mechanism area in the lower receiver. The trigger module includes a module housing including a first side wall spaced apart from a second side wall. An automatic sear mount is included on the module housing and an automatic sear is pivotally secured to the module housing on the automatic sear mount. An automatic sear biasing element is also mounted on the module housing. One or more trigger mechanism mounts are also included on the module housing and a trigger mechanism is secured to the module housing on the one or more trigger mechanism mounts.

Abstract: A firearm impingement apparatus that includes a gas flow control member that is operable to provide incremental adjustment of gas flow within the gas block of the firearm impingement apparatus wherein the gas flow control member is configured to provide calibrated rotational movement thereof. The gas flow control member further includes a first portion, second portion and third portion contiguously formed. The first portion includes a plurality of longitudinal indentations circumferentially disposed thereon. The second portion has a diameter that is less than that of said first portion and said second portion. A mounting member is present adjacent an opening of a channel and includes a control pin biasly mounted therein that is operable to engage the gas flow control member. The control pin engages the longitudinal indentations to provide calibrated rotational movement of the gas flow control member.

Abstract: Methods and apparatuses for securing a barrel to a receiver are disclosed, including inserting the barrel into the receiver, wherein the receiver comprises a bore with three or more guiding surfaces, one or more threaded securing holes, and a receiver indexing flat and wherein the barrel comprises: a tenon, one or more anchor points, and a barrel indexing flat; making contact between the tenon and the three or more guiding surfaces of the bore; indexing the barrel indexing flat with the receiver indexing flat; threading one or more securing screws into the one or more threaded securing holes; and tightening the one or more securing screws onto the one or more anchor points in order to secure the tenon of the barrel against two of the three or more guiding surfaces. Other embodiments are described and claimed.

Abstract: A bullet with controlled fragmentation has a core in the form of a generally cylindrical body having a forward end and a rear end and intermediate side portions extending there between, the forward end of the core defining a cavity, a jacket encompassing the rear end and at least selected portions of the sides of the core, the jacket having a sidewall having a first drive band portion having a first wall thickness, and a second portion immediately forward of the drive band portion having a second thickness less than the first thickness, the exterior of the jacket defining a cannelure groove encircling the bullet, and the cannelure groove being positioned forward of the first drive band portion. The drive band may have forward edge defining a step. The bullet of the present invention may also be received in the case mouth of a rimless case and be partially protruding therefrom.

Abstract: A rifle apparatus and method wherein the rifle includes a replaceable, threaded, adjustable barrel assembly which is configured for quickly changing the barrel length of the rifle, converting the rifle for using a different caliber of ammunition, and/or accurately determining and quickly setting the headspace in the firing chamber of the weapon for firing the new ammunition. Further, the rifle apparatus preferably also includes a replaceable lower receiver with a well opening and a corresponding magazine retention and release assembly for receiving a magazine clip for the caliber of ammunition fired by the replaceable barrel.

Abstract: A trigger mechanism for a firearm provides modified and/or adjustable trigger pull length, reduced sear pressure, reduced reset trigger slap, and/or improved engagement of the trigger safety.

Abstract: The invention is directed toward a heated grip for a firearm. The heated firearm grip comprises a grip body, and a rechargeable cartridge comprising a power source and an electrically resistive heating element. The grip body is shaped as a pistol style firearm grip and has a hollow internal cavity in the grip body. The grip body is interchangeable with the factory installed grip of a firearm. The rechargeable cartridge may have a shaped rigid outer body. The rigid shaped outer body may be configured to operate as a pistol clip. The rechargeable cartridge may be removably secured within the hollow internal cavity of the grip body. The rechargeable cartridge may be removed when a user presses a magazine release button on the grip body of the firearm.

Abstract: A timing module for use in a detonating system which includes discriminating and validating arrangements which sense and validate at least one characteristic of at least one parameter produced by at least one shock tube event and an electronic timer which executes a timing interval in response thereto.

Abstract: A window mounted gun rest including an inverted U-shaped mounting clamp. A threaded aperture is disposed through a rear portion of the mounting clamp, and a plate screw is threadably engaged within the threaded aperture. A mounting plate is disposed between each of a front portion and the rear portion of the mounting clamp. The mounting plate is attached to a tip of the plate screw. A muzzle rest is disposed on a middle portion of the mounting clamp. An elevation support arm is hingedly attached to the rear portion of the mounting clamp. A padded support member is disposed on the elevation support arm. An elevation locking mechanism is configured to selectively lock the elevation support arm into one of a plurality of heights relative to the muzzle rest.

Abstract: A firearm trigger assembly is disclosed. The disclosed assembly may include a trigger, a disconnect, and a hammer, each of which may be configured to be spring loaded when installed in a firearm receiver. Installation of the trigger assembly in a firearm receiver may include pivotally coupling the trigger and disconnect to the firearm receiver using a trigger pivot pin, and pivotally coupling the hammer to the firearm receiver using a hammer pivot pin. The trigger may include an integral sear feature configured to provide a mechanical stop to the hammer. The disconnect may be configured to be at least partially located in a disconnect slot located alongside or adjacent to the trigger sear feature when the disconnect is pivotally coupled to the trigger. The disconnect and hammer may each include integral cam features configured to buffer hammer contact during firearm recoil.

Abstract: Systems and methods are provided that alert a firearm operator when the firearm is low on ammunition. As the operator expends ammunition, the system tracks the ammunition level and provides a visual indication within the operator's field of view when an aiming device of the firearm is being employed. In this manner, the operator's attention need not be diverted from the aiming device, yet the operator is simultaneously notified as to the ammunition status.

Abstract: A hammer strut support (150, 156, 160, 162, 166) in a firearm which supports or aligns a free end (134) of a pivotally mounted hammer strut (116), and physically blocks it from becoming lodged in a position, typically under a crosspin (120) such as a sear spring stop pin, that would preclude subsequent proper reassembly of firearm, unless un-lodged and properly repositioned. It is sandwiched in, and may also envelop, firearm structure. Upper surface (154) of hammer strut support may also have a guide channel (164) to align hammer strut (116).

Abstract: A removable rail for mounting over an AK iron sight assembly of an AK type rifle includes a pair of brackets that fit outer side surfaces of an AK iron sight assembly. At least one pressure clamp is disposed on a side of at least one bracket of the pair of brackets. When the pressure clamp is in an open position, the pair of brackets can be slid over the AK iron sight assembly for mounting or for removal. When the pressure clamp is in a closed position, the pair of brackets are held in a non-moving engagement with the outer side surfaces of the AK iron sight assembly. A fixed AK rail, another type of AK rail, and a method for adding a small arms accessory rail system to an AK rifle by mounting a rail over an AK iron sight assembly are also described.

Abstract: A perforating gun that has a detonator section in which a window is formed is assembled by: disposing a detonating cord in an inner bore of the perforating gun; fixing a clip to a detonator; gripping the clip with an installation tool; inserting the clip laterally through the window of the detonator section using the installation tool; and attaching the clip to the detonator cord by pressing the clip against the detonator cord using the installation tool. The clip has a planar base, an opening formed in the base for receiving the detonator, and a pair of prongs extending from the base, wherein each prong of the pair of prongs extends from an edge of the base and has a gripping end.

Abstract: An initiator with fuse device for an automatic self-contained fire suppressor and method are provided herein. Stovetop fires are a well-known residential and commercial hazard. An initiator with fuse device provides a reliable activation of an automatic stovetop fire suppressor. A device and method which provides a secure and robust attachment of an initiator to a fire suppressor, while reducing required component parts, manufacturing time, and labor, is provided herein. An initiator cup with integral cylindrical extension affords a thermoform attachment of the cup to the fire suppressor container while providing a secure mechanical attachment of the fuse to the initiator cup.

Abstract: A handgrip for a firearm is provided for ergonomic angular adjustment. The ergonomic adjustable handgrip illustratively includes an attachment to a firearm, an upper grip portion, and a lower grip portion. The lower grip portion can be released by a push button, adjusted to a user preferred angle relative to the upper grip portion, and locked into the angle by releasing the push button.

Abstract: A modular disruptor cannon includes three open-ended tubular structures. A first tubular housing defines a first interior region longitudinally aligned with a second interior region. The first tubular housing has external-surface threads at a first end thereof adjacent to the second interior region. A tubular insert is fitted in the second interior region. A second tubular housing defines a cap longitudinally aligned with a barrel. The barrel has an inside diameter equal to the inside diameter of the tubular insert. The cap has internal-surface threads for mating with the external-surface threads of the first tubular housing where the barrel is longitudinally aligned with the tubular insert.

Abstract: A handgun includes a locking mechanism disposed within a thickness of a grip, the locking mechanism being configured to engage with a lever associated with a slider and a magazine carried within a cavity formed by the grip; and a spring-loaded lock pivotally attached to the frame and configured to engage with a lip on a side surface of the slider, the spring-loaded lock being configured to secure the slide in a fixed position when engaged with the lip. A method includes disengaging the magazine after all bullets therein are used via the locking mechanism; and releasing the slide as the new loaded magazine is placed in the cavity of the grip via the spring-loaded lock.

Abstract: A handheld finger activated semi-automatic arm may include a barrel, a trigger, a moveable gun bolt and a trigger reset mechanism. The trigger reset mechanism may use rigid mechanical contact between the trigger and the gun bolt during an earliest portion of the operating cycle. The trigger may be blocked from depression by the gun bolt up to 99% of the operating cycle.

Abstract: A tunable muzzle compensator for a firearm that includes a tube that extends the barrel of the weapon by fitting over the muzzle. This center tube includes one or more holes along its length. One or more removable sections that have gas exit ports at various predetermined angles fit over the center section. Removable sections can be rotated to either turn off top holes on the center tube or to choose different angles of gas discharge The total effect of all the removable sections represents a particular tuning for the weapon. The weapon can be very quickly tuned on the range or in the field to compensate for weight of the projectile, the charge, and the shooting style by simply replacing and/or reversing removable sections with sections that have different angles of discharge.