JavaScript seems to be disabled in your browser. You must have JavaScript enabled in your browser to utilize the functionality of this website.
Up To $600 Off Top Brands With Classic Rebates - Shop Now!!!
Shop Popular AR-15 RiflesSHOP NOW
Shop Popular HandgunsSHOP NOW
Shop AllIn Stock AmmoSHOP NOW
Exclusive Classic Firearms 30 Round AR MagazineGET YOURS
Add a Limited Lifetime Warranty.
(Quantity based on total count of this item in cart)
Warranty successfully added to your cart!
In Stock
Sig Sauer RM400-SDI-16B-MSGRN: The M400-SDI X was designed to meet the highest standards of performance and reliability. From the rifle's full suite of ambidextrous controls to its proven mid-length gas system. Features fully Ambi Controls- safety, charging handle, bolt Catch & mag release; 2-Stage Matchlite Duo trigger; free floating M-LOK; mid-length direct impingement operating system and 6 position Magpul SL stock.
