Abstract: A projectile for use with a cartridge case comprising a nose having a nose chamber, a tail end disposed adjacent the nose and having a tail end chamber, a partition separating the nose chamber and the tail end chamber, and a valve being disposed in the partition and providing fluid communication from tail end chamber to the nose chamber.

Abstract: A laser activated grenade is provided which includes a controllable laser source activated at specific times to generate radiation pulses. An energetic material within the grenade is ignited upon delivery of the generated radiation pulses. A propellant charge material triggers a propellant explosive train when the energetic material ignites. The grenade further includes load materials which are selectively activated once the propellant explosive train has been launched. The laser source may be located remotely from the grenade in order that the generated radiation pulses travel to the grenade through a fiber optic cable. Alternatively, the laser source may be embedded in the grenade and activated by a microwave/RF coded signal received from a remote signal transmitter.