This AR15 consists of Brownell's exclusive complete AR upper receiver chambered in 5.56 X 45 mm, NATO made in the USA.  Includes a low profile gas block, M-16 style BCG with forward assist, and phosphate finish.  The 16" standard M-4 carbine length barrel features a standard M-4 contour with a 1:8 twist.  A standard A3 13-slot aluminum flat top receiver with a 10" free float handguard with Key Mod rail system. 

The lower receiver is made by Arrow from 7075 T6 forging and is a "multi-cal".  The lower accepts standard AR-15 magazines.  The lower internal parts are from DPMS and are Mil-Spec. 

Finishing the AR is a collapsible stock with Mil-Spec buffer and parts.