Description This lot is for four stripped Aero Precision AR15 lower receivers that can be chambered in .223 Rem, 5.56 NATO, .300 Blackout, etc… First is a Aero X15 made of forged aluminum with a FDE Cerakote finish. Second is another X15 but with a black anodized finish. Third is a Aero LBRTY15 with black anodized finish and Liberty shield stamped on the right side of the magazine well. Last is Aero LBRTYM4 lower built off of a M4E1 enhanced forged aluminum lower with black anodized finish. All of these lowers work with standard AR15 components/magazines and increased magazine well flare. Must ship to a FFL holder. Condition: New in box, all are factory BLEMS. Serial: X319926 X333827 Manufacturer: AERO PRECISION USA Caliber: .223, 5.56, .300 Blackout Model: X15, Liberty 15 Book# 04369 04368