The FK BRNO PSD is a single action, tilting barrel, positive-lock mechanism pistol with a patented recoil attenuating system developed specifically to handle the potent and highly terminal 7.5 FK cartridge. The PSD Pistol comes standard with an extra dual-calibre barrel in 10 mm/.40 S&W and uses a standard 7.5 FK multi-calibre magazine.The unique auxiliary barrel system is designed to give the user the option to train with other calibers especially when the stopping and incapacitation power of the 7.5 FK is not required. Our barrel system incorporates a simple barrel change procedure that does not require tools or expertise. A barrel change takes less than one minute. Features: Quick and easy barrel/calibre conversion. Proprietary recoil attenuating system. Proprietary multi-calibre magazine allows the use of 3 calibres, 7.5 FK, 10mm, and .40 S&W. Textured, ergonomic frame provides a secure and comfortable grip. Integrated optics mounting platform compatible with most leading brands. Rapid acquisition sight system that does not require adjustment within the range spectrum. Sights shoot to aiming point up to 100 meters with the 7.5 FK calibre. Picatinny rail for easy mounting of accessories. Slide charging handles. Lifetime warranty on frame and slide. Two-year warranty on all wearable parts.