Daniel Defense M4A1 Upper chambered in 223 Rem/556NATO, 16″ (14.5″ with Pinned Brake) Barrel, 1:7 Twist, with M4 12.0 Rail.
<p>Daniel Defense M4A1 Upper Mil-Spec upper receiver with indexing marks and M4 feed ramps. CNC machined of 7075-T6 aluminum and Type III hard coat anodized. Pinned low profile gas block is CNC machined of 4140 hardened steel, Mil-Spec heavy phosphate coating, carbine length, direct Daniel Defense M4A1 Upper Specifications: UPC Code: 815604016612 Manufacturer: Daniel Defense Manufacturer Part #: 23-004-13150 Model: M4A1 Type: Upper Caliber: 223 Rem Caliber: 556NATO Barrel Length: 16″ (14.5″ with Pinned Brake) Finish/Color: Flat Dark Earth Accessories: M4 12.0 Rail Type of Barrel: 1:7 Subcategory: Upper Receivers</p>
