Double Action

I browesed Wikipedia for CZ 110 it says that it is a SA/DA pistol and type Double Action. What does that mean?

Can i make the first fire in SA and the rest in SA too? or can i fire it in DA first and thre rest in SA? Why did Wikipeida mentioned “TYPE Double Action” and at the same time it says “it is a SA/DA pistol” ?

if its a sa/da yes you can fire the first shot sa and the rest sa, in order to fire in da you have to decock the firearm. double action (da) is a longer harder trigger pull because you are compressing the hammer/striker spring (cocking) and then releasing the sear to release the hammer cause the gun to fire, in single action you are just releasing the sear, trigger pull is shorter and lighter because you are not compressing the hammer spring.

if its double action only (DAO) you can only fire in double action mode, this is actually better for a defense/tactical weapon because of the consistent trigger pull.

the cz100 is considered a DAO because its a typical striker fired gun, which isnt really dao or sao, because the slide partially (half cocks) the striker and the trigger pull completes and fires the gun its called dao but true daos have what called double strike capability (if the shell doesnt fire, pull the trigger again and the firing pin will strike primer again) typical striker guns (glock, s&w m&p/sigma, the new ruger, kahr ect) really function more like a SAO.

the cz110 is a striker gun but the slide fully cocks the striker (single action) and it has a decocker so the trigger can fully cock the striker (double action).

Double-action