Economical Yet High-Quality Upper For Your Custom Build

The Aero Precision upper is made of 7075 aircraft aluminum for superior strength and given a super tough, Type 3 hardcoat anodized finish for excellent wear resistance. It also features laser-engraved T-marks and an American flag on the Picatinny rail, plus M4-type feed cuts inside for reliable feeding. Compatible with standard, mil-spec AR lowers and components. A really high-quality receiver at a great price!