It's Always Sunny in Philadelphia S16 E02 Frank Shoots Every Member of the Gang

"More Gang for your buck."

After Frank shoots Dennis and Dee, they resolve to take Frank’s gun away. Mac and Charlie go on a road trip with their moms to get their inheritances -- for Mac, it’s letters written by his grandfather which have fallen into his Uncle Donald’s hands, while for Charlie, it’s a jar of teeth that is now in the hands of his sisters, Bunny and Candy.