It was replaced in 2016 so I suspect it is a newer material. It also shoots smooth and consistent.
A few years back I purchased a 124 that was supposed to have been recently rebuilt. It was shooting slow so I took it apart and it had new parts but the seal needed to be fitted to the cylinder. I would sand a bit then re-install. With each sanding, the velocity crept up. after a few sandings, the velocity was up to factory specs.
Last edited by mp44; 04/02/21.
