M400

Sig Sauer M400 SDI 5.56 NATO 11.5" Black PM400-SDI-11B-BLK

11.5 in Barrel 30+1 Rounds Optic Ready Folding Pistol Brace

Sig Sauer M400 Tread 5.56 NATO 16" Black RM400-16B-TRD-V2

16. in Barrel 30+1 Rounds Optics Ready