Description
When you want to start your AR build, the Cornerstone lower is the starting point. It is machined from forged 7075-T6 aluminum to tighter than Mil-Spec tolerance with nylon tipped tensioning screw to ensure the solid fit between upper and lower. It features a flared mag well, pictogram safe and fire indicators, chevrons on the front of the mag well, and the distinctive Grey Ghost markings. The low
