I bought a new Armalite AR10 16" flattop upper with chrome-lined barrel for $600+ish + tax at recent SF Cow Palace gunshow.
Had to spend a few $$ more for sights - had a flattop receiver and Pic rail front sight/gas block.
This upper goes on my Armalate AR10 RAW lower to sometimes replace the 20" A2 upper
Armalite uppers do not really work on DPMS/Fulton etc lowers - nor vice versa. (Noveske N6, AeroPrecision, Aircraft Armament (limited production) all make Armalite-compatible lowers.)
So you should be able to build a $1100ish AR10 if you can get a receiver for a few hundred bux.
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