Daniel Defense MK12 SPR URG 5.56mm 18 Upper Receiver Group
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Daniel Defense
Overview
The Daniel Defense MK12 SPR URG is a complete upper receiver group designed for the AR-15 platform, featuring an 18-inch barrel chambered in 5.56 NATO. Its rifle-length gas system enhances reliability and accuracy, making it suitable for precision shooting applications. This upper receiver is commonly used in designated marksman builds, where accuracy and effective range are paramount.
Specifications
Daniel Defense MK12 SPR URG 5.56mm 18 Upper Receiver Group
Build history on GunPartPicker
Builders have been adding the Daniel Defense MK12 SPR URG 5.56mm 18 Upper Receiver Group to their builds on GunPartPicker since April 2026. All time, it ranks #223 of the 1,625 upper receivers builders have added.
It was in stock most days in August 2026, and today all 5 retailers we track have it in stock. It dipped to $1,632 at Brownells for a stretch in August 2026, under its usual $1,703.15 to $1,765, so sales do come around. Buying today, the lowest price is $1,681 at BattleHawk Armory.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 35 retailers
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Frequently Built With
The part most often added in each category by the 8 builds that include this one
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Cryptic Coatings 5.56 NATO AR-15 Bolt Carrier Group - Mystic Bronze
Fortis SHIFT Vertical Grip - M-LOK
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