Sig Sauer M400 SDI XSeries 5.56mm 16″ Rifle, Black

The SIG M400 SDI XSeries was developed with the input from professional instructors at SIG Sauer Academy.  Building off decades and countless hours of instruction, the M400 XSeries was made to meet the highest standards of performance and reliability.

The M400 XSeries features fully ambidextrous controls including a bolt catch/release unique to the M400 SDI lower receiver. A free floating handguard uses a new steel lockup design for reduced deflection for maximum rigidity. The 2-stage Matchlite Duo trigger provides a crisp 4.5-6.5 lb pull weight with a flat bow design. A chrome lined barrel and performance coatings ensure maximum durability and reliability.