This CMMG MK4 Endeavor features a DMR stock, a QD attachment on the handguard, handguard covers, a 1913 rail section at 6 o'clock on the handguard, and a threaded barrel with muzzle brake. The original box and one 10-round magazine are 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.