The PS90 provides a compact, lightweight and completely ambidextrous firearm capable of fulfilling numerous security, personal defense, competition, and recreational shooting roles. Chambered in the 5.7x28mm cartridge, the PS90 utilizes blowback operation and fires from a closed bolt for greater accuracy and reliability. Fired cases are ejected downward where they cannot interfere with the user. The PS90's civilian legal 16.04" cold hammer-forged MIL-SPEC barrel is equipped with an integrated muzzle brake to reduce recoil. Dual magazine latches, cocking handles, and an innovative synthetic thumbhole stock with a molded-in sling attachment point help make the PS90 fully ambidextrous.