I'd be interested in knowing too, and what about a .22 LR cylinder (8 shot) from a LCR (shrouded hammer) swap into a .22 Mag LCRx (6 shot exposed hammer).
I've been wanting an LCRx .22 LR with a 2 inch barrel but it hasn't been made, yet.
I have a spare LCR cylinder that someone was selling on eBay a few years back. No surface treatment but otherwise as far as I can tell correctly manufactured.
If you have the ability to measure your cylinder, I'd gladly measure mine to tell you whether it'd fit.
Looking at a 9mm/.38 spl LCR convertible. Ebay sometimes has dmil .38 cylinder, crane, ejector assemblies for sale at $30-50. I'd consider buying a 9mm if a .38 cylinder would also function. Thanks.