B-17s had up to THIRTEEN .50 cals.Pretty cool! But why not get a P-47 and have 8 of them! Or, better yet, a B-17 and have 10!
Just kidding. A F4U (in fact it was from the Black Sheep Squadron) landed at the local strip 1.5 miles from the house about 15 years ago - man it was impressive - shook the ground when it took off!