The LifeCard .22LR / .22WMR by Trailblazer Firearms is only one-shot, folding handgun meant to match the length and width dimensions of a standard bank card (3.375″ × two.125″) that has a thickness of around 0.5 https://foldable-handgun348700.blogdomago.com/41870974/overview-with-the-lifecard-charge-card-gun