US Cartridge, 120mm Practice, M931
This cartridge is a full-range practice round for use in the 120mm, M120 and M121 Battalion Mortar Systems.
The cartridge consists of a point detonating (PD) (practice) fuze, a hollow projectile body with vent tube and base plug, a fin assembly, an obturating fuze ring, four propellant increments and an ignition cartridge. The cartridge is similar in appearance to the M933 and M934 HE cartridges. The cartridge is also ballistically similar to the HE cartridges and produces a similar signature (flash and/or smoke and audible sound) upon impact.
Nothing else to see.