The CZ 75 is a short recoil operated, locked breech pistol. It uses the Browning linkless cam locking system similar to that used in the Browning Hi-Power pistol, where the barrel and slide are locked together on firing, using locking lugs milled into the barrel mating with recesses in the roof of the slide. An enclosed cam track integral with the barrel is actuated by the slide release lever’s transverse pin. After the first few millimetres of the recoil stroke, the barrel is cammed downwards at the rear, enabling the slide to continue the recoil stroke and eject the spent cartridge.
The CZ 75 was one of the first Wonder Nine handguns; most models have double-action/single action triggers and feature a frame-mounted manual safety. This allows the CZ 75 to be carried with the hammer cocked with safety applied and a round chambered, ready for use simply by switching the safety off, a configuration known as condition 1. The hammer must be dropped manually by pulling the trigger while lowering the hammer with the firer’s thumb under control to uncock the hammer for a double-action first shot. Once lowered in this manner, a double-action first shot can be achieved in a similar manner to other double-action pistols without actuating any controls. Subsequent shots will be single-action unless the hammer is again manually lowered. Some recent models have a decocking lever that doubles as a manual safety.