Daniel Defense M4A1 RIS II 14.5" 5.56 NATO Complete Upper Receiver - Black

The Daniel Defense M4A1 RIS II Upper Receiver Group is a high-quality option to start your next AR-15 build. At the core of this upper receiver is a 14.5-inch Cold Hammer Forged M4 Profile barrel, designed for durability and accuracy. The barrel is chrome lined and constructed from Chrome Moly Vanadium (CMV) steel, featuring a 1:7 twist rate for optimal bullet stabilization. Additionally, the barrel is HP/MPI tested to ensure it meets high-performance standards. The included Daniel Defense Flash Suppressor is pinned and welded to the barrel, ensuring compliance with overall length regulations while providing effective flash reduction.

Features:

• Chambered in 5.56 NATO
• 14.5” M4 profile, chrome lined, HP/MPI tested
• CMV steel barrel construction, Mil-spec heavy phosphate coated
• 1:7 twist rate
• Pinned low profile gas block
• Pinned and welded Daniel Defense Extended flash suppressor
• M16 profile bolt carrier group
• Chrome lined and properly staked gas key
• M4A1 rail interface system – RIS II
• GRIP-N-RIP charging handle
• Includes color-matching Daniel Defense rail panels
• Made in the U.S.A.

The GRIP-N-RIP Charging Handle accommodates both left- and right-handed shooters, ensuring accessibility and comfort. The M16 profile bolt carrier group, included as standard, is chrome lined and features a properly staked gas key for enhanced durability and function. The pinned low profile gas block and direct impingement gas system contribute to the upper receiver's consistent performance. This model features the Daniel Defense M4A1 rail interface system (RIS II) that’s CNC machined from 6061-T6 aluminum and hard coat anodized, ensuring both strength and lightweight construction.