Daniel Defense M4A1, Upper, Complete Upper Receiver, 5.56 NATO, 14.5" Pinned (16" OAL), Daniel Defense M4A1 FSP Rail Interface System Rail, Carbine-Length Gas System, Surefire SF3P Flash Hider, M16 Profile Bolt Carrier Group, Anodized Finish, Flat Dark Earth and Black

This Daniel Defense M4A1 FSP AR15 style Upper Receiver Group was built for customers wanting a firearm inspired by USSOCOM SOPMOD Block II. This upper features the M4A1 FSP RIS II picatinny quad rail in Flat Dark Earth, a 14.5" M4 profile barrel, Mil-Spec F-Marked front sight base, Surefire SF3P flash hider / suppressor adapter, A1.5 Fixed Rear Sight, M16 profile full auto bolt carrier group, and Rail Mounted QD Swivel Attachment Point with QD swivel. • UPPER RECEIVER: Mil-Spec with Indexing Marks and M4 Feed Ramps. CNC Machined of 7075-T6 Aluminum • BARREL: Chrome Moly Vanadium Steel, Cold Hammer Forged, 1:7 Twist, 14.5 M4 Profile, Chrome Lined, Mil-Spec Phosphate Coated;GAS SYSTEM: Mil-Spec F-Marked Front Sight Base, Carbine Length, Direct Impingement;MUZZLE DEVICE: Surefire SF3P Flash Hider / Suppressor Adapter, Black Ionbond DLC Coating, Pinned and Welded to Barrel;BOLT CARRIER GROUP: M16 Profile, Mil-Spec MP Tested, Chrome Lined, Properly Staked Gas Key;SIGHTS: A1.5 Fixed Rear Sight, 6061-T6 Aluminum, Type III Hard Coat Anodized;HANDGUARD: Daniel Defense M4A1 FSP Rail Interface System (RIS) II, CNC Machined of 6061-T6 Aluminum, Type III Hard Coat Anodized FDE