US Patent 10549571 Tactical pen

Representative implementations of devices and techniques provide a tactical pen that may include various useful features and components, according to various embodiments. In the implementations, the tactical pen is comprised of multiple components (e.g., two or more sections) which may be coupled together and which may be sealed with one or more seals to provide moisture or humidity protection to the contents of the pen. For example, in addition to an ink pen refill (e.g., ball-point pen refill), the tactical pen may include one or more cavities or compartments to store items, a sharp implement, as well as one or more additional tools or implements.