Stainless cylinder... Not bad at all for $340
https://www.smga.com/p-72312-sw-103...ammer-no-lock-38-spl-187-5rd-syn-grip-ss.aspx
https://www.smga.com/p-72312-sw-103...ammer-no-lock-38-spl-187-5rd-syn-grip-ss.aspx