I emailed them a few weeks ago, and this is the response I got from customer service:MasterMaker wrote:I have been in contact with KelTec and they said that they were working on a 22 conversion for it, but that was a year ago....Guy Fawkes wrote:The Kel-Tec PMR-30 is a thirty-round .22WMR pistol. Apparently it's possible, but I think everyone and their brother would buy one in .22LR.
"There was brief talk of making a 22LR conversion for the PMR, but I haven't heard any more on it in a long while so I don't know if it's still being considered or not, sorry. "
That's not really a solid answer either way. But it does look like I'll have to get a revolver if I want a high(er) capacity .22LR.