The M4A1 AR15 style Upper Receiver Group features the RIS II picatinny quad rail which has been in use by US Special Operations Command (SOCOM) for the SOPMOD Block II program since 2005. The M4A1 is built around a 14.5 inch Cold Hammer Forged M4 Profile barrel with a permanently attached Daniel Defense Flash Suppressor. The independently ambi GRIP-N-RIP Charging Handle accommodates left- and right-handed shooters. All Daniel Defense complete upper receiver groups come standard with an M16 profile bolt carrier group.
MATERIALS & CONSTRUCTION
- UPPER RECEIVER: Mil-Spec with Indexing Marks and M4 Feed Ramps. CNC Machined of 7075-T6 Aluminum Type III Hard Coat Anodized
- BARREL: Chrome Moly Vanadium Steel Cold Hammer Forged 1:7 Twist 14.5" M4 Profile Chrome Lined Mil-Spec Heavy Phosphate Coated and HP/MPI Tested
- GAS SYSTEM: Pinned Low Profile Gas Block CNC Machined of 4140 hardened steel and Mil-Spec Heavy Phosphate Coating Carbine length Direct Impingement
- MUZZLE DEVICE: Daniel Defense Extended Flash Suppressor 17-4 PH Stainless Steel Salt Bath Nitride Finished Pinned and Welded to Barrel
- BOLT CARRIER GROUP: M16 Profile Mil-Spec MP Tested Chrome Lined Properly Staked Gas Key
- SIGHTS: Sold Separately
- HANDGUARD: Daniel Defense M4A1 Rail Interface System (RIS) II CNC Machined of 6061-T6 Aluminum Type III Hard Coat Anodized FDE
- CHARGING HANDLE: GRIP-N-RIP Charging Handle Body CNC Machined of 7075-T6 Aluminum Handles & Latch CNC Machined of 6061-T6 Aluminum Heavy Duty Stainless Steel Roll Pins Type III Hard Coat Anodized
- RAIL PANELS: Daniel Defense Rail Panels Made from Santoprene Heat Resistant to 300° F.
- Made in the USA!
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