Abstract: A single-use firing indicator device for a projectile having a hollow rear extension includes a stopper and an indicator member. The stopper is shaped to at least partially cover the rear extension of the projectile. The indicator member is connected to the stopper and may secure the firing indicator device to the projectile. Removing the firing indicator device to prepare the projectile for firing requires permanently deforming the indicator member. As a result, the firing indicator device reliably conveys the firing status of the projectile without requiring costly modification or added parts.

Abstract: A cartridge tube for a grenade capable of being fired by a live round of a weapon has a bullet trap to stop the bullet and a plug made of a deformable material to prevent the fragments produced when the bullet impacts on the bullet trap from escaping from the cartridge tube. The plug bears against a wall positioned between the plug and the bullet trap. The wall is attached to the cartridge tube and is substantially perpendicular to the center-line of the tube. The wall is positioned at a distance from the bullet trap along the center-line of the cartridge tube, thus establishing an empty space between the wall and the bullet trap.