This is a VERY hard to find factory original titanium cylinder it’s used but in excellent condition. It comes with the ejection rod. No hash chemicals were used to clean it. It will fit the Smith & Wesson J Fames 642,442,638,342,637,438, no gunsmith should be required to install it but I can’t guarantee that. It should drop right in. Please look at the pictures with the micrometer. Please feel free to email me for more pictures and with any questions at
[email protected]
Thanks
Mike