SMG - Suppressed - .45 ACP - USA - 1000 RPM - Designed by Gordon Ingram as a compact SMG replacement for the standard M1911A1 pistol, the MAC10 has had a small cult following among Special Forces users.  When used with a suppressor, the high cyclic rate is easier to control.  However, the very same cyclic rate causes a lot of wear and tear on the suppressor's internals. D.E. Watters