I just acquired a used Caywood "Type D Trade Gun" put together by Chuck Edwards. I think I'm in love. Anyway, it will be used. Probably used a lot. Before going out and buying extra barrels (one rifled and one jug choked for turkeys), id like to make sure i can get replacement parts for the lock. From what I read, Mike Rowe built the locks for Caywood. I tried to find a website for Mike Rowe and Quality Locks but I can't find any info. Are they still in business?