Aero M4E1-E Complete Upper, 16" .300 Blackout Barrel, EM15 - FDE Out of stock. Check back later... $700.00 MSRP Price: $629.99 Notify me when this item is back in stock (log in required) Description Details Reviews Shipping info UPC: 815421021455Manufacturer: Aero PrecisionModel: APAR640252M14Category: PartsOtherUpper receiverStock: 0Unit/Measure: EA This item may be shipped directly to your home address, unless you live in a restricted state.