Girsan MC9 Disrupter, Striker Fired, Semi-automatic, Polymer Framed Pistol, 9MM, 4.6 Threaded Barrel, Optics Ready Slide, Camo Finish, Black, Interchangeable Back Straps, 17 Rounds, 1 Magazine 390360 The MC9 pistol series will rock your world. MC9 pistols have the features and quality you want, in a sleek light ergonomic package, equipped with interchangeable backstraps, picatinny rail and trigger safety built on a high strength steel slide and polymer frame.