From funny videos and funny pictures at CollegeHumor.
If Robert Heinlein were still around, maybe he could write a story about the future where anyone who can field strip and function check his piece in 60 or less gets a vote; otherwise, not. You step in the voting booth, disassemble and reassemble the weapon, and the voting switch unlocks. The book could be called STAR-TROOPER PODKAYNE or something.
Hat-tip to Partywhipple