I think what Metalman8600 is referring to is a inertial firing pin, early CZ-75 pistols did not have the firing pin block, CZ-75B models do, dont know if that matters, but "B" models can be carried with the hammer down, and a round chambered (condition 2). But i do not know about early models, but they should have inertial firing pins so there sould be no problem that i can see. You would carry it just like a "B" models. Hope this helps.