Daniel Defense M4A1 RIII URG 5.56mm 14.5" FDE – Complete Upper Receiver Group

The Daniel Defense M4A1 RIII Upper Receiver Group delivers a fully assembled 5.56mm NATO upper receiver with a 14.5-inch cold hammer forged barrel in Flat Dark Earth.

• Type: Complete Upper Receiver Group
• Caliber: 5.56mm NATO / .223 Remington
• Barrel Length: 14.5 inches
• Barrel Profile: Government, cold hammer forged, chrome-lined
• Twist Rate: 1:7
• Gas System: Mid-length
• Handguard: RIS III M-LOK
• Finish: Flat Dark Earth (FDE) Cerakote
• Compatibility: Mil-spec AR-15 lower receivers
• Includes: Bolt carrier group, charging handle
• Legal Note: 14.5" barrel requires permanent muzzle device or registered SBR lower