Aero M4E1-T Complete Upper, 12.5" 5.56 Carbine Barrel, RM10.3 - Ano Available to order on-line. Ships in 5-14 days $615.00 MSRP Price: $586.00 Description Details Reviews Shipping info UPC: 840014620616Manufacturer: Aero PrecisionModel: APAR700703M30Category: 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.