A buddy of mine got 3 Green Mountain barrels. One was on a .32 squirrel gun. It shoots one hole at 35 yards! The .45 was sealed in plastic and will go on Kentucky rifle long gun when he rebuilds the stock. The .54 went on and CVA gun and he kills deer with it every year. He took it Elk hunting once, but didn't get close enough for a shot. I think he got them unfinished and had them blued afterword.