Deal10% off all Aero Precision Products with code Aero10 This Aero Precision M4E1 Threaded upper receiver group comes completely assembled with 13.7" 5.56 barrel and the ATLAS S-ONE M-LOK handguard. This barreled upper receiver group does not include BCG or charging handle allowing you to choose your favorites for your build. from Swamp Yankee Arms (Product APAR700307M5) |