I have a early 89 slabside with A2 sights on the upper.
Printable View
I should have said this earlier this year. I, too, handled my first M16A1 in 1978. I also have a Colt AR15 A2, but not an HBAR. Mine is from 1987.
http://i100.photobucket.com/albums/m...psod743jti.jpg
http://i100.photobucket.com/albums/m...psahfvdm9n.jpg