Inert projectile 81 mm steel body

Replaceable steel fin assembly

Threaded fuse well for M-29 practice fuse

Accepts M-21 training propellant cartridge (120 grain)

Projectile body reusable min 500 cycles

Fin assembly reusable average 100 cycles (sand, gravel)

Mass 3.6 kg (w/o fuse and propellant charge)

Length 313 mm (w/o fuse)

Six projectiles in wooden transportation box