Daniel Defense DD5 V4 Upper | 7.62×51 NATO | 18-inch M-LOK

The Daniel Defense DD5 V4 Upper Receiver Group in 7.62x51mm NATO is a factory-configured upper built to enhance long-range capability for platforms compatible with the DD5 family. It pairs an 18-inch cold hammer-forged barrel and a DD5 M-LOK rail to provide a stable mounting platform for optics and accessories. A user-adjustable gas block supports consistent function when shooting suppressed or unsuppressed, while the superfinished, DLC-coated bolt carrier group lowers friction and simplifies maintenance. This upper is suited to long-range precision and match competition use.

Product Specifications

• The caliber is 7.62x51mm NATO / .308 Winchester.
• The barrel length is 18 inches and is cold hammer forged.
• The barrel profile is S2W.
• The gas system is rifle-length direct impingement.
• The muzzle device is Daniel Defense Superior Suppression Device (17-4 PH stainless, salt bath nitride).
• The handguard is a Daniel Defense DD5 Rail 15.0 with M-LOK, CNC machined from 6061-T6 aluminum and Type III hard coat anodized.
• The upper receiver is CNC machined 7075-T6 aluminum with Type III hard coat anodize.
• The gas block is a user-adjustable, CNC-machined 4140 hardened steel with mil-spec phosphate coating.
• The bolt carrier group is superfinished and DLC-coated with an integrated buffer for optimized cycling.
• The bolt features enhanced extractor geometry and dual ejectors for reliable cycling.
• The mounting system is M-LOK.
• The barrel is finished with chrome lining and uses the manufacturer’s proprietary S2W profile.
• The product weight is listed as 6.2 lb.
• The product is made in the USA.
• The UPC is 818773021388.

The DD5 V4 upper is constructed around durability and consistent performance: the cold hammer-forged barrel and robust rail system deliver a foundation for precise shot placement at extended ranges, while the adjustable gas system and refined BCG help manage recoil impulse and reliability. Its feature set makes it a practical choice for precision shooters and match competitors seeking a factory-engineered upgrade for the DD5 platform.