As far as rarest, the P220 9mm Using the American button is, IMHO, the rarest. I've a number of with the ecu release, but have not witnessed 1 in person With all the American button. A Model in the SIG P220 handgun produced by SIG Sauer by using a reversible https://sigp220legion10mmholster36419.blogzag.com/71493553/top-latest-five-sig-p220-10mm-holster-urban-news