Aero M4E1-E Complete Upper, 10.5" 5.56 Carbine Barrel, EM9.3 - FDE Out of stock. Check back later... $635.00 MSRP Price: $569.99 Notify me when this item is back in stock (log in required) Description Details Reviews Shipping info UPC: 815421022759Manufacturer: Aero PrecisionModel: APAR640222M2Category: PartsOtherUpper receiverStock: 0Unit/Measure: EA This item may be shipped directly to your home address, unless you live in a restricted state.