Well if you're talking about the folding grip with the clip for the LR model, than I suppose you could flick it open much like a folding lock-back knife. With the MAG model, you have to depress buttons on both sides of the grip-clip, and then flick it open.
My 2 cents: I don't like either set-up, as the grip/clips make the minis too big, thus defeating the purpose of having a ultra hideout gun. Stick with the standard grips, or if you must, go for the oversized rubber grips that will still allow you to use a pocket holster (but not the ones from NAA!).