Complete upper receivers include: AR-10 port door assembly (EA1165), AR-10(T) port door rod (EA1171), AR-10/M-15 port door spring (EA1167), and AR-10 forward assist kit (10005001KIT).
AR-10A4TM complete upper is our standard flat-top upper with the standard port door rod used for all AR-10®’s that will utilize a two-piece handguard. If a free float handguard is to be used, the 10002000 AR-10(T)TM upper receiver assembly is what you need.
Caliber: 7.62X51 mm / .308
Upper Receiver: Forged, flat-top with MIL-STD 1913 rail, 7075-T6 Aluminum
Finish: Anodized aluminum upper, manganese phosphated steel barrel