Daniel Defense MK12 Upper Receiver Group 18"

The Daniel Defense MK12 Upper Receiver Group is purpose-built for precision applications, featuring an 18" stainless steel barrel with the MK12 profile that made the original SPR (Special Purpose Rifle) famous. The barrel is cold hammer forged with the chamber created during the forging process, ensuring the most precise alignment of chamber to bore possible. A DLC (Diamond-Like Carbon) finish provides unprecedented accuracy and durability.

The MK12 barrel is engineered with a rifle-length direct impingement gas system, providing the smoothest possible cycling with reduced bolt carrier velocity and extended component life. The MK12 gas block is built to Crane Specifications for USSOCOM, precision CNC machined from 416 stainless steel with black oxide coating.

The upper is equipped with a free-floating DDM4 Rail 12.0 quad rail handguard, providing full Picatinny coverage for optics, bipods, and accessories essential for precision shooting. Every MK12 ships complete with Daniel Defense's M16 profile bolt carrier group (MPI tested, chrome lined) and the GRIP-N-RIP ambidextrous charging handle with anti-gas features.