Sovereign Union Rapid Pistol 1939

SURP-39 is a sub-machine gun introduced by Halway Industry headed by Sir Daniel Helath, it first enters mass manufacturing at 1939 and became the standard issued SMG for the Sovereign Union Armed Forces. 

It is considered light, cheap and easy to mass produce. It fires a custom ammunition of 7x18mm Haleth cartridge and the issuing firm is considering to re-chamber its design to fit larger calibers.  It uses simple (straight) blowback action and can fire up to 300-400 rounds per minute with the muzzle velocity of 425 m/s.

It is fed with a 20-round magazine box, some variants however is fed with up to 36-round magazine box.