This gun is the SWD M11-A1 small frame variant of the M11 A1 Submachine gun. This is the last and best variation of the small frame macs. The cyclie rate is 1800 RPM(rounds per minute). Super fast ! Unloads a 30 round magazine in 1 second ! This gun fireds the 380 acp round from the same zytel magazine as it’s big brother the SWD M11.