Originally Posted by
Ron3
Correct.
Wolff gunsprings sells versions for the oldest version, but models with a suffix are different and nobody makes extra power springs for them.
Allegheny Arms told me they wanted to make that happen.
I do not think the 80x slide will fit on an older lower. Different recoil spring assembly entirely and slide lock / release lever. The barrels, as you know, swap across the Cheetah line.