The DD5 V4, chambered in 7.62x51mm NATO, provides users of the Daniel Defense semi-automatic platform even greater long-range precision shooting capability. This rifle includes an adjustable gas block that allows for a consistent feel whether shooting suppressed or unsuppressed. The DLC Coated bolt carrier group reduces overall recoil impulse and is easy to maintain and operate in all conditions. The 4-Bolt Connection System to ensures greater accuracy, GRIP-N-RIP independently ambi charging handle with anti-gas features for a better shooting experience. Features an enhanced flared mag well and rear receiver QD swivel attachment point and a Daniel Defense DD5 Rail 15.0. Accepts All SR-25 magazines. Made in the USA. The Daniel Defense 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.