PSA 10.5" 5.56 NATO 1/7 Phosphate 10.5" Lightweight M-Lok Upper With Romeo 5, MBUS Sight Set, BCG, & CH

Barrel: 10.5" 4150V Chrome-moly vanadium steel barrel, phosphate coated and chambered in 5.56 NATO with a 1 in 7" twist. This carbine-length gas barrel is finished off with a PSA 10.5" Lightweight M-Lok Rail, a low profile gas block, and an A2 style flash hider. Upper: 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.Includes: Magpul MBUS Sight Set & Sig Sauer Romeo 5 Red Dot SightBolt Carrier Group: For AR15 and M16 rifles and carbines. Bolt is made of shot-peened, Mil-spec Carpenter 158A(R) steel. Gas key is secured with grade 8 fasteners and staked. Includes Charging Handle.Sig Sauer Romeo 5 Red Dot Sight:ROMEO5 compact red dot sights provide civilians and armed professionals a robust 1x aiming solution for any situation. Ultra-low parallax so point-of-aim is point-of-impact and the red dot remains parallel to the bore of your firearm, no matter what your viewing angle is relative to the optical axis of the sight. Unlimited eye-relief allows you to acquire the aiming point and the target regardless of the position of your eye behind the sight. The readily available CR2032 battery is side-loading, allowing for quick battery replacement (featuring 50,000+ hours or more of life). Dependable waterproof (IPX-7 rated for complete water immersion up to 1 atmosphere) and fog-proof performance.FEATURES:-2 MOA Red-Dot provides 10 illumination settings (8 daylight plus 2 NV) for visibility in all light conditions-MOTAC(TM) (Motion Activated Illumination) powers up when it senses motion and powers down when it does not. Provides for optimum operational safety and enhanced 50,000+ hour battery life-Integrated M1913 Picatinny interface provides industry-standard mounting options for a wide range of applications-Dependable waterproof (IPX-7 rated for complete water immersion up to 1 meter) and fog-proof performance-Includes a M1913 Picatinny low mount riser and a co-witness 1.41" riser mount