I bought a Kimber .22 long rifle slide a couple weeks ago. The instructions were entirely adequate. The slide fits just fine. I thought it would make a pretty good plinker. It's more accurate than that: it could make a match pistol.
The rear sight's adjustments are a bit sketchy: all clicks don't seem to be created equal.
After I bought the slide, I found it it's designed for high speed ammunition. I want to shoot standard velocity ammunition. It handles some standard velocity ammunition reasonably well most of the time, but definitely prefers hot stuff, which is completely useless to a bullseye shooter.
I called Kimber, whose experts suggested replacing the gun's main spring with a lighter spring, which might well render it useless as a .45 A.C.P. I spoke with a competent gunsmith this afternoon about the conversion slide. He said he might lighten the main spring a little, but has no doubt he can make the frame work very well as both a .45 and a .22; unfortunately, he's busy until some time this coming winter.
I wouldn't rate the slide five stars, but with a bit of tweaking and some patience on my part, I've got a hunch I may end up with a match pistol or nearly a match pistol.