This Daniel Defense DDPCC features an adjustable stock, a fully ambidextrous lower receiver, an SLR muzzle comp with 1/2x28 TPI, and a 1:10 twist rate. Includes three 35-round PMAGs. 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.