Aero M4E1-E Complete Upper, 16" 5.56 M4 Carbine Barrel, EM15 - Ano Available to order on-line. Ships in 5-14 days $645.00 MSRP Price: $614.00 Description Details Reviews Shipping info UPC: 815421021431Manufacturer: Aero PrecisionModel: APAR640251M6Category: PartsOtherUpper receiverStock: Ships in 5-14 business days.Unit/Measure: EA This item may be shipped directly to your home address, unless you live in a restricted state.