I guess my most memorable was shooting an M16 at Knob Creek with a PVS-4 Gen II starlight, it's a big scope
but did not handle that way, the AR pistol grip gave plenty of leverage to keep the scope level!
Around 1995, there was a flood or Russian stuff here and got to use the Russian copy of the
PVS 4, heavier, bigger, weird battery and a chevron reticle!
After, that using an Elcan scope with the tritium reticle was nice too.