Anyone has any experience with this 308 AR upper made by Alexandria PRO-FAB ?
http://www.aimsurplus.com/product.aspx?item=XPF30818U8459900&utm_source=AIM+Surplus+Main+List&utm_campaign=62d0d1900f-02122016&utm_medium=email&utm_term=0_6870497a6a-62d0d1900f-17900345
http://www.aimsurplus.com/product.aspx?item=XPF30818U8459900&utm_source=AIM+Surplus+Main+List&utm_campaign=62d0d1900f-02122016&utm_medium=email&utm_term=0_6870497a6a-62d0d1900f-17900345