This Desert Tech MDRX features an ambidextrous charging handle, an ambidextrous safety, an ambidextrous mag release, and a 3-prong flash hider. Purchase includes the owner's manual, one 30-round 5.56 Pmag, a MDRX side eject to forward eject upgrade kit, a 16" .308 barrel, and a 5.56/.308 mag insert. 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.