US Cartridge, 40mm Dummy, M922
This dummy cartridge is used as a drill round to train users in handling ammunition and loading the Mk 19 series grenade machine gun and the M129 grenade launcher.
The cartridge is completely inert and simulates a loaded round of 40mm HE ammunition in size, shape, and weight. This fixed round consists of a one piece solid aluminum projectile body together with a copper rotating band. The cartridge case is crimped around the projectile body. There are four thru- holes drilled through the cartridge case to the high-pressure chamber for positive identification. The primer hole is filled with RTV sealant. The rotating band and the belt links are modified for repositioning after cycling in an Mk 19 weapon.
Nothing else to see.
Collaborative Ordnance Data Repository