So explain some things to a noob and correct me if i'm wrong... Single action... Do you have to cock it every shot like a revolver, or does the semi-auto part of it take care of that? And if such is the case then do you only cock the hammer the first time each mag, or is that the description of SA/DA? DAO... Every trigger pull performs two actions, the hammer cock and firing? If what I described first is correct about SA,.and isn't sa/da then what the poop is it?