"Wow! I'll take it if Ernesto doesn't follow through.
Seems like it might be mid 80s... like a '84 or '85. It has similar components to my '85 Expedition that I still ride everyday.
That is a solid bike."
"A drive-side photo would make it easier to identify. Components visible don't suggest 1993, which, as tricolor pointed out, was when Rapidfire started appearing and if it wasn't that it had Deore top-mount shifters. "