Elephants Never Forget, On The Side #28 Mystery Cache

Now we move to one of our all time favorite topics which surprisingly to this point we have not made many puzzles out of. Well that is about to change and it starts now. In this film which is one of our top ten a weapon is used that we have never seen in any other film and probably will not ever see it again. What is the weapon and who did he represent?

You can validate your puzzle solution with certitude.