New forms of suppressive gunfire decoys are provided. In some aspects, a pin-pull device may be used to program and adjust several settings of the decoy devices, activating such devices immediately before deployment. In some aspects, the pin-pull device may serve as a remote control unit. In a preferred method of deployment, the devices are thrown to a location different from that occupied by the user(s), simulating another source of gunfire, distracting and misleading an enemy, and providing the effects of suppressive fire. In some embodiments, a networked computer system(s) may be used as a remote control unit, and the decoy device may include cameras and other sensors for tactical surveillance. In still other aspects, the gunfire decoy device may be capable of locomotion, and may be self-relocating in response to certain commands, or in reaction to stimuli, to confuse the enemy regarding sources of gunfire and troop locations.

A method and system for a perforating gun having a box by pin perforating gun system using swaged down gun bodies. The box by pin perforating gun system may include a removable cartridge to hold a detonator with a switch and an insulated charge holder as an electrical feed-through.

The present invention relates to stackable projectiles having a warhead and a propulsion unit. An adaptor enables the warhead to be coupled to propulsion units made of different materials. Furthermore, an adaptor couples different profiles of warheads and propulsion units and allows projectiles to be stacked without need for design modifications. The assembled projectile can be fired electrically or mechanically.

A duplex projectile cartridge system (e.g., 400) for use in a standard rifle (e.g., 10) has a front bullet (e.g., 320) and a substantially cylindrical back bullet (e.g., 440) coaxially aligned with one another. The front bullet's base is held in the cartridge case neck far enough to engage the back bullet's front surface so that the case neck simultaneously bears upon the front bullet and the back bullet. Optionally, the cartridge configuration orients the back bullet and defines one or more gas bypass lumens to allow expanding gas to initially bypass the back bullet and drive the front bullet distally to force an inter-bullet gap (e.g., “IBG” 480) upon firing.

A duplex projectile cartridge system (e.g., 400) for use in a standard rifle (e.g., 10) has a front bullet (e.g., 320) and a substantially cylindrical back bullet (e.g., 440) coaxially aligned with one another. The front bullet's base is held in the cartridge case neck far enough to engage the back bullet's front surface so that the case neck simultaneously bears upon the front bullet and the back bullet. Optionally, the cartridge configuration orients the back bullet and defines one or more gas bypass lumens to allow expanding gas to initially bypass the back bullet and drive the front bullet distally to force an inter-bullet gap (e.g., “IBG” 480) upon firing.

A projectile deployment system includes an entangling projectile including a pair of pellets and a tether connecting the pellets. A projectile casing includes a pair of sockets, each socket sized to carry one of the pair of pellets and a selectively activatable pressure source, carried by the projectile casing. The pressure source is capable of expelling the entangling projectile from the projectile casing toward a subject. A launcher carries an activator operable to activate the pressure source to expel the entangling projectile from the projectile casing toward the subject. The projectile casing is removably engageable with the launcher to allow removal of the projectile casing from the launcher after expulsion of the entangling projectile from the projectile casing.

Ammunition for a conductive energy weapon. A receptacle includes a cavity accessible through each of a first opening in a first face of the receptacle, a second opening in the first face of the receptacle, a third opening in a second face of the receptacle and a fourth opening in a third face of the receptacle. A propellant unit is included within the cavity proximate the second opening and a projectile is included within the cavity proximate the second opening. A housing is coupled to at least the second face and the third face of the receptacle and is further configured to couple to the conductive energy weapon. The propellant unit releases a propellant into the cavity, in a direction substantially opposite the projectile's direction of flight, in response to a trigger pull of the conductive energy weapon, and the cavity directs the propellant in the projectile's direction of flight.

A method and system for a perforating gun having a box by pin perforating gun system using swaged down gun bodies. The box by pin perforating gun system may include a removable cartridge to hold a detonator with a switch and an insulated charge holder as an electrical feed-through.

A method and system for a perforating gun having a box by pin perforating gun system using swaged down gun bodies. The box by pin perforating gun system may include a removable cartridge to hold a detonator with a switch and an insulated charge holder as an electrical feed-through.

An ammunition cartridge for an air gun includes a housing, a partition, a cap, at least one projectile, and at least one gas flow aperture. The housing defines an interior space. The housing has a rear portion and a forward portion. The partition is disposed in the interior space and engaged with the rear portion. The cap is releasably engaged with the forward portion. The at least one projectile is received in the interior space between the partition and the cap. The at least one gas flow aperture extends through the partition and provides a fluid flow path through which a pressurized gas provided by the air gun enters and pressurizes the interior space to propel the cartridge through a barrel bore of the air gun.