This is a Nordic Components Upper, model NC15-UR-EXT.
Building a bench gun or varmint rifle? Have a 50-year old axe to grind with the military for insisting on a forward assist? Whatever the reason" Nordic's extruded upper provides an economical option for those ARs that just don't need all those other bits stuck on the side of the upper.
Features:
Dust cover, forward assist, and brass deflector omitted
Compatible with standard AR15-spec bolt carrier groups, charging handles, and barrels
Flat-top Picatinny rail accommodates mounting optics or other accessories
