Aero M4E1-T Complete Upper, 10" .300 Blackout Barrel, SM9.3 - FDE Out of stock. Check back later... $655.00 MSRP Price: $589.99 Notify me when this item is back in stock (log in required) Description Details Reviews Shipping info UPC: 840014601752Manufacturer: Aero PrecisionModel: APAR700312M4Category: PartsOtherUpper receiverStock: 0Unit/Measure: EA This item may be shipped directly to your home address, unless you live in a restricted state.