Sig Sauer M400 SDI X-Series 5.56 NATO 16" 30+1 Semi-Auto Rifle, Black - RM400SDI16BP

Semi-automatic AR-platform rifle chambered in 5.56 NATO with a 16" chrome moly steel barrel, 1:7 twist rate, and 30+1 round capacity. Features a Sig Flatblade Match trigger, ambidextrous controls, optic-ready upper with 15" M-LOK handguard, Magpul SL-K collapsible stock, and hybrid compensator/flash hider. Weighs 7 lbs with an overall length range of 33.5" to 36.8".