Mitrailette Model 1931
The Schmeisser-Byard Model 1931 is a variant of the Tuefel designed Schmeisser M1928/II submachine gun, license built by Pieper. The Belgian improved version features tangential rear sights and 9mm parabellum ammunition.
Calibre: 9x19mm Parabellum
Action: blowback operated, open bolt, selective fire
Length: 820mm
Weight: 4kg empty
Magazine: 20 or 32 round side mounted box magazine.
MV: 350m/s
ROF: 550/min
Imperia M1945
This is a simple sub-machine gun designed by Pieper which is constructed from stamped steel parts and has a folding stock. Its design is based on that of the British STEN. Deliveries began in 1945.
Calibre: 9x19mm Parabellum
Action: blowback-operated, open bolt, fire-selector
Length: 760mm; barrel 196mm
Weight: 3.2 kg
Magazine: 32 round detachable box magazine
MV: 365 m/s
ROF: 500/min
Effective range: 100m