Plymouth MA has a museum where an almost exact replica of the Mayflower sits. It's called the Mayflower II and it "was built in Devon, England and crossed the Atlantic in 1957." It's supposed to be a very accurate remake of the ship that brought the first settlers from Europe to America. In the back of the ship rests this gun ready to fire on any pirates or other ne'erdowells while sailing the seas.
I tried to make it look a little old with a sort of bleach bypass look. I hope it worked.
Enjoy the shot and thanks for dropping by!