I don’t know about you, but I’d draw the line at WMD. If some guy wants to put 8 Brownings in his P-51 Mustang, I don’t see a reason he can’t do it. If you own a larger than two-seat helo, I don’t see a reason you can’t mount an M60 in it.
Mortars, rockets, M203, GE cannons, all protected under the Second Amendment.
That would be pretty impressive. Even North American only installed 6.