Sig Sauer's M400 TREAD is a high performance AR-platform brimming with features. It comes equipped with a rigid, lightweight M-LOK enhanced handguard with more than enough slots to accommodate lights, lasers, and other accessories. The lower receiver features an ambidextrous safety and features an integrated QD mount for easy sling attachment. The 11.5" stainless steel barrel offers excellent corrosion resistance and is topped with a 3-prong flash hider to keep muzzle signature to a minimum. The M400 TREAD includes a SIG Matchlite 2-stage trigger for enhanced control and improved accuracy. Features of the M400 TREAD: Free Floating M-LOK Enhanced HandguardSIG Matchlite 2-Stage Trigger11.5" Stainless Steel BarrelMid-Length Gas SystemAmbidextrous SafetyLower receiver QD mounts Sig Sauer M400 TREAD V2 5.56x45mm NATO 11.5" 1:7" Bbl Optics Ready Pistol w/Magpul BSL Brace PM400-11B-TRD-V2