Aero M4E1-T Complete Upper, 16" 5.56 M4 Barrel, RM15 - FDE Out of stock. Check back later... $685.00 MSRP Price: $614.99 Notify me when this item is back in stock (log in required) Description Details Reviews Shipping info UPC: 840014602407Manufacturer: Aero PrecisionModel: APAR700715M6Category: PartsOtherUpper receiverStock: 0Unit/Measure: EA This item may be shipped directly to your home address, unless you live in a restricted state.