Daniel Defense M4A1 RIS III Upper Receiver Group, FDE

Daniel Defense M4A1 RIS III Upper Receiver Group, Flat Dark Earth (23-004-01097-011) The M4A1 RIS III features a 14.5” Cold Hammer Forged barrel with a permanently attached Daniel Defense Improved Flash Suppressor to meet the NFA required 16” length. Daniel Defense complete upper receiver groups come complete with bolt carrier group and charging handle. Features: 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″ Government Profile, Mid Length length Gas System, 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, Mid-length, Direct Impingement MUZZLE DEVICE: Daniel Defense Flash Suppressor, 17-4 PH Stainless Steel, Salt Bath Nitride Finished BOLT CARRIER GROUP: M16 Profile, Mil-Spec MP Tested, Chrome Lined, Properly Staked Gas Key HANDGUARD: RIS III 12.5″, Patented 6-Bolt Bolt-Up System, CNC Machined of 6061-T6 Aluminum, FDE Type III Hard Coat Anodized 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 Specifications: Barrel Material: 4150 Chrome Moly Vanadium Barrel Type: Cold Hammer Forged Barrel Profile: Government Rifling Twist: 1:7″ Gas System Length: Mid Length Muzzle Device: Flash Suppressor Weight: 4.175 LBS Rail System: RIS III 12.5″ (M-LOK)