Systems, devices, and methods including a bullet; a retroreflector array adhered to a base of the bullet, the retroreflector array having prism facets with a periodicity between 0.2 mm-2.0 mm; and a cover disposed over the retroreflector array and hermetically sealed at the base of the bullet; where the cover is disposed over the retroreflector array in a first position prior to firing, and where the cover is released from the base of the bullet in a second position after firing.

Haptic feedback system that simulates a detonation or explosive event. The system includes a power supply, an energy storage circuit, a switching circuit, and a conductor operatively connected to said energy storage circuit through said switching circuit whereby said conductor causes a haptic event when said energy storage circuit is electrically connected to said conductor by operation of said switching circuit. The system creates real explosions, shock waves and pressure waves in a safe manner for use in a simulator.

Haptic feedback system that simulates a detonation or explosive event. The system includes a power supply, an energy storage circuit, a switching circuit, and a conductor operatively connected to said energy storage circuit through said switching circuit whereby said conductor causes a haptic event when said energy storage circuit is electrically connected to said conductor by operation of said switching circuit. The system creates real explosions, shock waves and pressure waves in a safe manner for use in a simulator.

A laser trainer cartridge fits into a gun barrel and includes a backer, circuit and a laser. When the firing pin of the gun is activated it strikes the backer, which contacts the circuit and activates the laser. The laser trainer cartridge has a plurality of spaced-apart O-rings to keep it positioned properly in a gun barrel. The O-rings are configured to be positioned in a particular-sized gun bore. Multiple laser trainer cartridges, wherein each has different-sized O-rings to fit different caliber guns, may be provided as a kit.

A laser trainer cartridge fits into a gun barrel and includes a backer, circuit and a laser. When the firing pin of the gun is activated it strikes the backer, which contacts the circuit and activates the laser. The laser trainer cartridge has a plurality of spaced-apart O-rings to keep it positioned properly in a gun barrel. The O-rings are configured to be positioned in a particular-sized gun bore. Multiple laser trainer cartridges, wherein each has different-sized O-rings to fit different caliber guns, may be provided as a kit.

A weighted safety-insert for a magazine of a firearm. The safety-insert includes a body and a slidable portion. The body includes a protrusion extending downwardly from a bottom surface, and a channel extends within each of first and second side walls. A pair of flanges extend outwardly from the side walls, adjacent the bottom surface. The slidable portion, includes a top surface, and first and second side wall, each having an upper end disposed higher than the top surface and terminating in an inwardly facing lip. The slidable portion is adapted to engage the body such that the top surface of the slidable portion rests against the top surface of the body, the inwardly facing lips being slidably disposed within the channels in the side walls of the body or a prismatic protrusion of the slideable portion being slidably disposed in a channel in the top side of the body.

A weighted safety-insert for a magazine of a firearm. The safety-insert includes a body and a slidable portion. The body includes a protrusion extending downwardly from a bottom surface, and a channel extends within each of first and second side walls. A pair of flanges extend outwardly from the side walls, adjacent the bottom surface. The slidable portion, includes a top surface, and first and second side wall, each having an upper end disposed higher than the top surface and terminating in an inwardly facing lip. The slidable portion is adapted to engage the body such that the top surface of the slidable portion rests against the top surface of the body, the inwardly facing lips being slidably disposed within the channels in the side walls of the body or a prismatic protrusion of the slideable portion being slidably disposed in a channel in the top side of the body.