BudsGunShop.com - DA or SA?

Ben, according to CZ-USA web site, this gun is SA/DA. Details here >>>> https://cz-usa.com/product/cz-75-b-9mm-black-16-rd-mag/

Ben, it is a Single Action/Double Action. Double Action first shot, Single Action thereafter or you can thumb the hammer for a 1st round Single Shot as well. Cheers and stay safe!

SA/DA DA 1st shot SA for the next shots

Either, single action when the hammer is cocked and double action if you manually de-cock it after chambering a round (a generally unsafe practice for a model like this without a decocker). The preferred operating and carry procedure with a round in the chamber is hammer cocked, safety on.