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 9.99 SHTF Tactical GC_UPC Aero Precision M4E1 Stripped Lower Receiver AR-15 Platform Black Hardcoat Anodized - APAR600001C $139.99 APAR600001C show more like this Calculated in Cart Classic Firearms GC_UPC Aero Precision M4E1 AR-15, Multi-Cal Stripped Lower Receiver, Black $139.99 APAR600001C show more like this Free (Except HI/AK) Impact Guns