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Orings are cheap, as long as you don’t get them from an airgun dealer. I can’t believe how much they charge for orings. Ive gotten every oring that needed changing so far from Home Depot in the plumbing section. Just a couple dollars for a dozen or so, and they all have worked just fine. So these new airguns we buy are new, but some of the orings are not new. I saw dry rot and cracking orings on a brand new barrel and fill probe. At least orings are an easy fix. When I change orings I put a tiny bit of clear silicone grease on to lube and protect it.