Hello all you experts. This may have come up already but I haven't found mention of it anywhere on the inter-web. I'm rebuilding my first firearm, a Crosman Pumpmaster 760 which appears to be a Variant 1 with wood furniture and foregrip cut like a Tootsie Pop. I came to the quad seal but found the original is a pressed in metal part. I cleaned it up a little to be sure and have attached a photo. Has anyone seen this before? If so what are my options? Thanks in advance for looking.