DealAR15 Mil Spec Stripped a3/a4 Upper Receiver. 7075-t6 Forged Aluminum, Flat Top Picatinny Rail, Dust cover and forward assist capability M4 Feed Ramps, Black Anodized. Made in USA. Note: blems may have slight blemishes that do not affect function. from Mid State Firearms (Product blem4upper) |