Based on the short-recoil, locked-breech design principles of John Browning's linkless cam locking system, the P-09 Duty represents yet another evolution of the company's duty pistols that goes back to the CZ 75. Specifically, the Duty line is most closely related to the CZ-75B models with its added firing-pin block, a passive safety system. Like the CZ 75, the P-09 can be fired in either single- or double-action modes and features a frame-mounted decocker installed (the pistol comes with an ambidextrous manual safety conversion also).
The slide rides inside the frame rails rather than outside. Though some shooters do not care for the reduced surface area with which to manipulate the slide, this slide-to-frame fit is unusually tight and enables a very efficient barrel lockup, providing exceptional accuracy.