I have a Thompson 1927A1 made in West Hurley and I am trying to find out when it was made. The serial number is 14981, and I inherited it from my Dad. If anyone has an idea on its age, or how to find out, I would be grateful. Also, I am looking to purchase an L Bridgeport drum magazine for the gun. There are new ones on the market, but most say they do not work with the West Hurley models. If anyone has one they would like to sell or know of someone wanting to sell, please let me know! Thank you! Phil