Aero AR15 Complete Upper, 16" 5.56 M4 Carbine Barrel w/ Pinned FSB, M4 Handguard Available to order on-line. Ships in 5-14 days $440.00 MSRP Price: $419.00 Description Details Reviews Shipping info UPC: 815421022292Manufacturer: Aero PrecisionModel: APAR505621Category: 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.