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, Nordics extruded upper provides an economical option for those ARs that just dont need all those other bits stuck on the side of the upper.Features :Dust cover, forward assist, and brass deflector omittedCompatible with standard AR15-spec bolt carrier groups, charging handles, and barrelsFlat-top Picatinny rail accommodates mounting optics or other accessories