Should've cast Clint Eastwood
Made it the latest sequel to the "Dirty" Harry Callahan franchise.
Harry's retired; he goes down to Key West with the grand kids and ends up blowing away bank robbers, surf Nazis and a serial killer targeting co-eds.
Surf Nazi: Hey grandpa, you ever tried a 40oz-er?
Harry: No. But I got a 44 right here!
(pulls out .44 caliber magnum)
BOOM! BOOM!
Harry: Your momma should'a told you boys... drinking's bad for your health.