Steve, to assist Doug with the answer to your question, there are no barrels like the barrels on Doug's ex-Lindner. Doug could probably write a book about those barrels as could I. I owned the gun and found the barrels to be like none I had seen before. Doug has pictured the ex-Lindner many times on the internet, but has never fully explained the barrels. Maybe he would give it a try. Or maybe the new owner would do it for us.