<p>Upper receiver: Mil-Spec with Indexing Marks and M4 feed ramps. Chrome Moly Vanadium steel barrel is cold hammer forged with 1:7 twist, 16 inch lightweight profile, Mid-length gas system, chrome lined, MP tested and Mil-Spec heavy Phosphate coated. Daniel Defense flash hider. M16 Bolt Carrier Group: Mil-Spec MP tested, properly staked gas key. Low profile gas block. MFR XS 15.0 rail system with M-LOK compatibility. Made in the USA.</p>
