<p><strong>Barrel: </strong>10.5" Chrome Moly vanadium steel, nitride coated and chambered in 5.56 NATO with a 1 in 7" twist rate. carbine-length gas barrel is finished off with a PSA 9" Lightweight M-Lok Rail, a low profile gas block, and an A2 Style Flash hider. </p> <p><strong>Upper:</strong> Forged 7075-T6 A3 AR upper is made to MIL-SPECS and hard coat anodized black for durability. These uppers are made for us right here in the USA by a mil-spec manufacturer. <br /><br /><strong>Optic</strong>: The SPARC II AR features rugged construction that’s still compact, with a lightweight form-factor. The 2 MOA dot is as easy as point and shoot - it’s quick to acquire in close-quarters, but fine enough for pin-point accuracy at extended ranges. With a 50,000 hour battery life and night-vision compatibility at the lowest two settings, the SPARC AR red dot will keep working in a variety of conditions.</p> <p><strong>**Upper Does Not Include BCG Or Charging Handle**</strong></p>