US Cartridge, 40mm Dummy, M25
This dummy cartridge is used in 40mm guns to simulate firings and to train personnel in ammunition handling and loading the weapon.
The cartridge consists of a modified service projectile and a modified cartridge case. The projectile is inert and is fitted with a dummy nose fuze. The cartridge case has a base plug in place of a primer, and a copper rivet is centered in the base plug to avoid damage to the firing pin of the weapon. The projectile and case are held together by a steel retaining rod extending through the case. One end of the rod is threaded into the tracer cavity in the dummy projectile and the other end has an internally threaded socket to fit the base plug of the cartridge case.
Nothing else to see.