This Daniel Defense DDM4 MK12 includes two 30-round magazines, and features an HK buttstock, an Ergo (LMT) pistol grip, an Arredondo magwell, a quadrail, a Knights Armament charging handle, and a 3-prong flash hider with a non-factory camouflage paint finish. The original Knights Armament flash hider 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.