The LifeCard .22LR / .22WMR by Trailblazer Firearms is a single-shot, folding handgun designed to match the size and width dimensions of a regular charge card (3.375″ × 2.125″) using a thickness of about 0.5 https://lifecard22wmr220297.blogcheer.com/797421/overview-of-the-lifecard-charge-card-gun