Hello, I have an AR-15 with an E.A. lower but cannot figure out what brand of upper I have. The only marks I can find on the upper is a C.W. stamped on the carry handle right by the rear sight, a 1.R and what looks like a crown on the front sight. Would there be any marks under the handguard on the barrel? All help is appreciated.
"CW" = Bushmaster production code. See http://www.biggerhammer.net/ar15/uppers/ for additional information. Also check out http://www.ar15.com/forums/board.html?b=3 for much more AR15 information.
