So far as rarest, the P220 9mm with the American button is, IMHO, the rarest. I have quite a few with the European launch, but have not observed one particular in particular person Along with the American button. The P220 Rail (or P220R) is effectively similar to the P220, but https://sigsauerp220legion45acpho56766.livebloggs.com/33085205/top-p220-45-price-secrets