Pen

US12385717 - Twist-action pen gun

A complete concealed, handheld, single shot pen gun having the full appearance of a well-designed twist action pen equipped with full writing function is presented. The invention provides seamless design without surface interruptions. A drop safety function locks the firing pin in a safe position. The drop safety cannot be deactivated by accident. After activation of the drop safety, the loaded pen gun is suitable for daily use as a regular twist action pen. The exchangeable pen refill can be extended and retracted; accidental triggering of the cartridge is not possible.