The Böker Plus CID cal .45 is a tactical pen that sets new standards in design and technology. It was conceived by Rainer Wenning, who has previously developed the Böker Plus Pocket-Sticks SO4PRO-K, and knife maker Thomas Braunagel. A revolutionary feature is the use of a bayonet mechanism. Functionally, the bayonet mechanism significantly enhances usability, as there is no need to unscrew a cap or twist out the ink cartridge to write. The bayonet slider can be operated just as quickly as a traditional push button, ensuring a secure grip during use as a tactical pen, with the thumb comfortably resting on the pen head. Equally important in civilian use is the guaranteed satisfaction of the male play instinct through the operation of the high-quality bayonet lock. Users of plastic ballpoint pens can now replace the annoying clicking sound with the satisfying sound of the completely metal bayonet lock.