I think mine is 1982 not sure if that's correct but it is stamped under bayonet lug and there is a number on receiver 001982-13. My handle has nothing written on it whereas the guy who posted the pic above has 5.56-223. On the mag well mine only days 5.56. Owners manual is dated 2006. So maybe there are good ones and less good ones in the lot?
Controls are ambidextrous, safety and mag release, mags drop free.
The other thing is I can't find the full auto selector switch the manual talks about?

. The manual is a riot. Pay close attention to page 3.