Can anyone tell me the difference between Federal XM193F and Federal American Eagle XM193?
http://www.aimsurplus.com/product.aspx?item=AFED223XM193&groupid=21
http://www.aimsurplus.com/product.aspx?item=AFED223B100&groupid=21
http://www.aimsurplus.com/product.aspx?item=AFED223XM193&groupid=21
http://www.aimsurplus.com/product.aspx?item=AFED223B100&groupid=21