Ammo Caliber Stickers
Ever seen those white oval stickers that say "26.2" or "13.1" on them? Apparently it's some sort of self-congratulatory thing for people who run marathons or half-marathons.
If you want to show off the caliber ammo you like, get this sticker.
It's a hell of a lot more likely to prevent a carjacking than some marathon bumper sticker.
Stickers measure 3" x 4.5" (oval).