Daniel Defense M4A1 Upper Receiver 14.5" Flat Dark Earth

Daniel Defense M4A1 Upper Receiver Group

The Daniel Defense M4A1 Upper Receiver Group stands as a testament to precision engineering and rugged reliability, embodying the high standards demanded by professionals in the field. This upper receiver group is equipped with the renowned M4A1 Rail Interface System (RIS II), a component that has been trusted by US Special Operations Command for their SOPMOD II Weapons System since 2005.

The RIS II is a two-piece, free-floating rail system designed for versatility and stability. It allows operators to mount devices such as an M203 grenade launcher without compromising barrel harmonics—a common flaw in lesser designs that can lead to accuracy issues like wandering points of impact. The innovative two-piece construction permits partial disassembly of the rail, facilitating easier cleaning around the barrel without necessitating complete removal of the entire system.

This design ensures that any weight attached to the RIS II is fully supported by a robust bolt-up system utilizing six Grade 8 bolts. This leaves the barrel completely free-floating, thus maximizing both accuracy and dependability—key attributes for any serious marksman or tactical operator.

The heart of this upper receiver group is its 14.5-inch Cold Hammer Forged M4 Profile barrel, which comes with a permanently attached Daniel Defense Improved Flash Suppressor to meet National Firearms Act requirements for an overall length of 16 inches. Furthermore, each complete upper receiver group from Daniel Defense includes an M16 profile bolt carrier group as standard equipment.

Specifications:

• Model: M4A1 URG
• Caliber: 5.56mm
• Barrel Length: 14.5 inches
• Finish: Flat Dark Earth (FDE)
• Part Number: 23-004-13150

If you are seeking unparalleled performance coupled with proven military-grade durability and functionality, look no further than this offering from Daniel Defense—a name synonymous with excellence in firearms manufacturing.