The Mobile Machine Gun-21 β Single Use Deployable Weapon Assault Carriage, known colloquially as the MMG-21B SUDWAC or Drop Gun, was an extremely versatile apparatus in the arsenal the United Nations Space Command Defense Force and deployed via SOEIV launch tube with the aid of a disposable composite sabot, though it can also be launched from dropships and similar support craft. Brought into full production in 2621, the SUDWAC saw quite limited use in the closing months of the Second Great War and an equally role use in the brief UNSC participation during the War of 2626; during the Galactic War, however, the MMG-21B would see an extremely lengthy service career as it wasn't retired until the 2750's when its use with the Army was ended.