Sig Sauer AR 15 Pistol




    The M400 TREAD pistol is an optics ready, aluminum receiver rifle caliber pistol. The TREAD pistol features a 11.5” Nitride Coated barrel with a free-floating M-LOK handguard, a single-stage polished/hard-coat trigger, ambidextrous controls, a Shockwave Blade multi position pistol brace, and is available in 5.56 NATO.The TREAD branded accessories include:


    – M-LOK handguard with lightening cuts to reduce weight, available in 11.5”;

    – Ambidextrous charging handle made of aircraft grade aluminum and a dual roll pin design;

    – ROMEO5 optic featuring a 2MOA dot with ten illumination settings, MOTAC, and 50k battery life;

    – Flip-up front and rear iron sights that are easy to install, adjustable, and deploy quickly;

    – M-LOK front sight adapter with co-witness height made of lightweight aluminum;

    – Multiple configurations of M-LOK grip kits made of high strength polymer;

    – Factory upgraded flat blade, single stage trigger.




    Mag Type AR-15
    Barrel Length 11.5 in (292 mm)
    Caliber 5.56 NATO
    Height 7.5 in [191 mm]
    Overall Length 27 in [686 mm]
    Overall Width 2.5 in [64 mm]
    Twist Rate 1:7
    Weight 6 lbs (2.7 kg)
    Operating System Direct Impingement


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