Goreville, IL did this back in 1982 after Morton Grove passed a handgun ban (since revoked, I believe).
Every resident must possess a handgun.
It was never enforced, or course. It was intended as a big FU to Morton Grove and, by extension, Northern (read:Chicago)Illinois.
God, I love it down here.
Being the sympathetic soul that I am, I felt it my civic duty to purchase a second Series 70 M-1911A1 and, in Gorevilles’ distinct honor, a parkerized Commander to boot.