This Sig Sauer M400 Tread features a mid-length system, a vertical foregrip, handstop, ambidextrous safety and mag release, a 1/8 twist, a 3-prong flash hider, and a Romeo5 red dot. One 30-round magazine is included. Get the best bang for your buck when you get a Certified Used Firearm. When you see the Certified Used stamp on any of our firearms, you can be confident that you're getting exactly what you want - a gun only in very good to excellent condition and held to the highest quality standard. All Certified Used Guns come with a 'no questions asked' return policy.