Complete Upper Receivers Include Ejection Port Cover, Rod, Spring, and Forward Assist.
10T complete upper – comes with longer port door rod than standard for customers wanting to free float their rifle – the longer port door rod is needed so it doesn’t slide out of the port door.
AR-10 uppers use 7175-T74 aluminum.
Thread Size: 1-7/16" X 18 UNEF-3A
Caliber: .308/7.62mm NATO
Upper Receiver: A4 Forged Flattop 7175-T74 Aluminum
Finish: Hard Coat Anodized