The "Ounce" pistol: The most compact folding .22LR caliber

This video features a review of one of the most unusual firearms in existence—the Ounce (also known as the Lifecard), a single-shot folding pistol chambered in .22LR. When folded, the device is virtually indistinguishable from a stack of bank cards or a small wallet, making it ideal for concealed carry. The video demonstrates the transformation from a compact rectangle to a fully functional, ready-to-fire pistol, highlighting the minimalist design and precision engineering of this miniature pistol.

When folded, the pistol is less than 1.3 cm thick, allowing it to be carried in a regular pocket. The pistol is single-shot and features a compartment in the grip for storing several extra rounds. The frame is made of high-strength materials, ensuring reliable firing despite its toy-like appearance. Such weapons are often marketed as "last resort" weapons or tools for enthusiasts of unusual engineering solutions in the EDC (Every Day Carry) space.