Magna Roman submachine gun

The Magna Roman submachine gun was the primary hand-held submachine gun projectile weapon in use on the planet Magna Roma in the later 2260s decade. Because of the parallel evolution of that world as a near-duplicate of Earth, the Romans of that world used weapons that were very similar machine guns of Human design. 


 * 'Because of divergences in the parallel evolution, the actual firearms and industrial materials processes of Earth's 20th century probably came about in a slightly different manner on the Roman world. The weapons they used were a parallel version of the Madsen M50 machine gun.''