Sig Sauer RM40016BTRDV2 M400 Tread V2 5.56 NATO 30+1 16" Stainless Threaded Barrel, Black Anodized Aluminum Receiver w/Picatinny Rail, M-LOK Handguard, Magpul SL-K Black Synthetic Stock, Reduced Angle Grip, Ambidextrous

The M400 TREAD features a free-floating M-LOK enhanced handguard that is lightweight yet rigid for extreme control and ease of mounting accessories such as lights and handstops. The lower receiver has an ambidextrous safety for right or left-handed operation and includes an integrated QD mount for easy sling attachment. The M400 TREAD features a stainless steel barrel offering durability and corrosion resistance while improving accuracy; 3-prong flash hider; 1:8 twist rate; mid-length gas system; SIG Matchlite 2-stage trigger; MAGPUL SL-K telescoping stock for easy adjustment and a customized fit.