GC_UPC Aero Precision APAR600001C M4E1 Stripped Lower Receiver AR-15 223 Rem,5.56x45mm NATO Black Hardcoat Anodized MAP APAR600001C show more like this 14.99 Defense Depot GC_UPC Aero Precision APAR600001C M4E1 Stripped Lower Receiver AR-15 223 Rem,5.56x45mm NATO Black Hardcoat Anodized $108.12 APAR600001C show more like this Calculated in Cart DACK Outdoors