how about a tank that has a weakk gun but and a not so strong hull like the BRADLEY that tank was used in both the iraq wars it has a guided missile actuallt two and a 20 milimeter canon as its main wepon which is very weak against a tank but the BRADLEY tank is very fast with its light armor. Much faster than the average tank and is very spacous inside (for a tank). so a tank all together as just one. not the gun and the hull but the entire tank ready to go. you can call it what ever you want if there is copyright laws or something. oh and the BRADLEYS main gun is very fast to reload :D