I'm seriously considering buying a Tristar Diana semiautomatic 12 guage shotgun with 3.5 inch chamber because of its very light weight (6.75 lb.), low cost (~$500), and lifetime repair warranty. However, I don't want to mess up. I would be grateful for input from anyone who has experience with, or other knowledge of, Tristar S/A shotguns (or other comparable low cost/light weight 3.5 inch 12 guage shotguns). Please let me know your thoughts. Thanks. Bob Dale