Daniel Defense DD4 RIII Complete Upper Receiver 16" Barrel FDE

The DD4 RIII Upper Receiver Group offers the longest barrel length of the RIII family and is perfect for popular shooting sports and for tactical defensive applications. Built around a 16 inch Cold Hammer Forged Government Profile barrel, its mid-length gas system is known to have a smoother recoil impulse. A 12.5 inch lightweight RIS III rail-modeled after the revolutionary RIS II two-piece handguard developed for SOCOM-free-floats the barrel and features M-LOK attachment for lighter weight. It has our ambidextrous Grip-N-Rip Charging Handle and ships with an M16 Profile bolt carrier group.Features:UPPER RECEIVER: Mil-Spec with Indexing Marks and M4 Feed Ramps. CNC Machined of 7075-T6 Aluminum, Type III Hard Coat AnodizedBARREL: Chrome Moly Vanadium Steel, Cold Hammer Forged, 1:7 Twist, 16" Government Profile, Mid-length Gas System, Chrome Lined, Mil-Spec Heavy Phosphate Coated, and HP/MPI TestedGAS SYSTEM: Pinned Low Profile Gas Block CNC Machined of 4140 Hardened Steel and Mil-Spec Heavy Phosphate Coating, Mid-length, Direct ImpingementMUZZLE DEVICE: Daniel Defense Flash Suppressor, 17-4 PH Stainless Steel, Salt Bath Nitride FinishedBOLT CARRIER GROUP: M16 Profile, Mil-Spec MP Tested, Chrome Lined, Properly Staked Gas KeyHANDGUARD: RIS III 12.5, Patented 6-Bolt Bolt-Up System, CNC Machined of 6061-T6 Aluminum, Black or FDE Type III Hard Coat AnodizedCHARGING 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 AnodizedSpecifications:Barrel Material: 4150 Chrome Moly VanadiumBarrel Type: Cold Hammer ForgedBarrel Profile: GovernmentRifling Twist: 1:7"Gas System Length: Mid-lengthMuzzle Device: Flash SuppressorWeight: 4.35 LBSRail System: RIS III 12.5 (M-LOK)