Elevate your AR-15 build with the Aero Precision AR15 5.56 Stripped Upper Receiver in sleek black anodized finish. Precision-crafted in the USA, it boasts M4 feedramps, .250 takedown pin holes, and laser-engraved T-marks, ensuring compatibility and ease of use. This receiver sets the stage for a reliable and customizable firearm, built to your exact specifications, making it a must-have for discerning gun enthusiasts.