This CMMG Mk17 Banshee includes the original box, two 21-round magazines, a telescoping support brace, and VOTATU front and rear flip-up fiber-optic sights. 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.