I suppose there will be some for sale on the EE from time to time. An alternative would be to buy a PPK, but have it sent to a 'smith like Barry Jensen at Bits of Pieces in Delta BC, to install a "restricted" barrel, re-register the gun and then send it to you. I've done that a few times with Barry. His work is outstanding and he's easy to talk to. Personally, if you're going to have the longer barrel installed, I think it looks a bit better on a PP, than on a PPK. It's a shame to have to do it at all, but...