Daniel Defense DDM4 V7 Pro 5.56mm NATO 18in Black Semi Automatic Rifle - 10+1 Rounds - The DDM4 V7 Pro was designed for competitors looking for a platform to dominate podiums in today's popular multi-gun matches. Built around our 18in Strength to Weight, Cold Hammer Forged barrel, this platform delivers the speed, controllability, and precision required to engage the most difficult multi-gun stages. California compliant design prevents the magazine release button from being engaged while fully assembled, locking the magazine into the receiver. To release the magazine from the rifle, the shooter will be required separate the upper from the lower by pulling on an extended (rear) takedown pin with an attached cord to make the process easier. Once the magazine has been released the rifle can be re-assembled and shot once again California Compliant Model Magazine Lock System H Buffer Pinned Low Profile Gas Block CNC Machined of 4140 hardened steel and Mil-Spec Heavy Phosphate Coating, Rifle Length, Direct Impingement Geissele Automatics Super Dynamic 3 Gun Trigger Made In The USA