The DD5 V3 Upper Receiver Group builds upon the foundation Daniel Defense established in 7.62 AR-style rifles. Whether you want to upgrade your DD5V1 or V2 or have an alternative caliber option for your V4 or V5 this highly accurate and durable upper receiver group includes an adjustable gas block that allows for a consistent feel whether shooting suppressed or unsuppressed. The perfected bolt carrier group reduces overall recoil impulse and is easy to maintain and operate in all conditions. Designed around a Cold Hammer Forged barrel with an innovative 4-Bolt Connection System this design dramatically increases the connection surface area between the barrel and upper receiver for increased rigidity/stability to wring out accuracy traditionally only found in high-end bolt action rifles. - Features - Backward Compatibility with DD5 V1 and V2 - User-adjustable gas block for reliable suppressed shooting - Superfinished and DLC-coated bolt carrier group makes it easy to clean and operate in all conditions - Bolt carrier is equipped with a buffer for optimized cycling and improved recoil impulse - Bolt is designed with enhanced extractor geometry and dual ejectors for reliable cycling - 16 Cold Hammer Forged proprietary steel chrome-lined barrel for a lifetime of accuracy and durability - Innovative 4-Bolt Connection System to ensure greater accuracy - GRIP-N-RIP independently ambi charging handle with anti-gas features for a better shooting experience - Materials & Construction - UPPER RECEIVER: CNC Machined of 7075-T6 Aluminum Type III Hard Coat Anodized - BARREL: DD Proprietary Steel Cold Hammer Forged 1:11