Daniel Defense MK12 SPR URG 5.56mm 18" Upper Receiver Group

The Daniel Defense MK12 SPR 18" Upper Receiver Group is engineered for precision marksmen and tactical shooters who demand unmatched accuracy and reliability. Built around an 18-inch Cold Hammer Forged stainless steel barrel with a DLC finish, this upper ensures precise chamber-to-bore alignment and long-lasting durability.

Featuring a rifle-length direct impingement gas system and the MK12 low-profile gas block built to USSOCOM Crane specifications, this upper delivers smooth cycling and consistent performance. The 12-inch free-floating DDM4 rail allows full customization with optics, sights, and accessories. An independently ambidextrous GRIP-N-RIP Charging Handle accommodates both left- and right-handed shooters, and the Daniel Defense Improved Flash Suppressor finishes off the design. Complete with a Mil-Spec M16 bolt carrier group, this upper is ready for high-precision applications.

Key Features

• Cold Hammer Forged 18" MK12 Stainless Barrel – Proprietary stainless steel blend, 1:7 twist, DLC finished, HP/MPI tested

• Rifle-Length Gas System – MK12 low-profile gas block, CNC machined 416 hardened steel, Black Oxide coated

• Daniel Defense Flash Suppressor – 17-4 PH Stainless Steel, Salt Bath Nitride finished

• Free-Floating 12" DDM4 Handguard – CNC machined 6061-T6 aluminum, Type III hard coat anodized

• Ambidextrous GRIP-N-RIP Charging Handle – CNC machined 7075-T6 aluminum, stainless steel roll pins

• M16 Profile Bolt Carrier Group – Mil-Spec, chrome lined, properly staked gas key

• Rail Panels Included – Santoprene, heat resistant to 300° F

• Made in the USA – Precision engineering and craftsmanship

Elevate your precision shooting with the Daniel Defense MK12 SPR 18" Upper Receiver Group, built for accuracy, reliability, and tactical performance. Buy from BattleHawk Armory today.