I am looking at buying a TC with a 14" 223 bbl for prairie dogs. I really don't know much about them, but I have heard that there were various different variations over the years and some are better than others. I am looking at a used TC serial #1691xx with a 14" 223. Any insight into the vintage of this and if it is good? It appears to be in great shape. Alternatively I found a brand new G2 with 14" 223 for $100 more than the used one. Are there advantages to the G2 that would justify this cost?