Sig Sauer, M400 SDI X, 5.56NATO, AR Pistol, Black (PM400-SDI-11B-BLK)

Sig Sauer The M400-SDI X Pistol has been developed with the input from the professional instructors. Building upon their decades of experience and countless hours of instruction, Sig developed the M400-SDI X Pistol to meet the highest standards of performance and reliability. With fully ambidextrous controls including a bolt catch/and release unique to the M400-SDI lower receiver, the M400-SDI X Pistol delivers advanced performance for both left & right-handed shooters and makes transitional shooting easier than ever.