The Daniel Defense MK12 SPR URG is a complete upper receiver group chambered in 5.56 NATO with an 18-inch cold hammer-forged barrel.
- Type: Complete Upper Receiver Group (URG)
- Caliber: 5.56 NATO
- Barrel Length: 18 inches
- Barrel Profile: Cold hammer-forged, chrome-lined
- Twist Rate: 1:7
- Gas System: Rifle-length
- Handguard: Free-float M-LOK rail
- Compatible With: Mil-spec AR-15 lower receivers
- Includes: BCG, charging handle, flash suppressor
- Use: Precision shooting, long-range applications, SPR builds
