PSA 10.5" Carbine-Length 5.56 NATO 1/7 Nitride 9" M-Lok Upper With BCG, CH, Viridian HS1 Mounted Laser & MBUS Sight Set

Barrel: 10.5" 4150V Chrome Moly vanadium steel, nitrided for accuracy and durability. Chambered in 5.56 NATO with a 1 in 7" twist. Carbine-length gas barrel is finished off with a PSA 9" Lightweight M-Lok Rail, a low-profile gas block, and an A2 flash hider.Upper: Forged 7075-T6 A3 AR upper is made to MIL-SPECS and hard coat anodized black for durability. Featuring a mil-spec finish, these uppers are made for us right here in the USA by a mil-spec manufacturer.Bolt: Bolt is made of Mil-spec shot-peened Carpenter 158 steel. Gas key is secured with grade 8 fasteners and staked per mil-spec. Viridian HS1 Laser Hand Stop:Viridian's new HS1(TM) is the world's first AR hand stop with an integrated laser sighting device. Utilizing M-Lok mounting, grip activation buttons, adjustable windage and elevation, and an ergonomic design, the HS1 is the perfect accessory for your tactical firearm.The uniquely placed pressure-activated button makes the HS1 ideal for use on AR-style firearms as the laser can be activated when the shooter is using a variety of grip styles. The shooter gets all the protection of a hand stop while utilizing a highly visible green laser sight for aiming.