This is pretty far astray from the original thread topic, but 35 years ago I was given a LNIB Series 70 Colt Ace. I almost immediately acquired a Gold Cup slide assembly and had it “deconverted” to the 45 caliber that the Good Lord and John Browning intended it to be. For that process I had my gunsmith actually fit the upper assembly and it is a proper Bullseye gun now.

I guess all in all, I like my serious guns to be in their intended caliber. I doubt my 52-2 will ever experience conversion to 22, much less 9mm.

Froggie