Pearce Grip's Grip Enhancer replaces the magazine base plate, but retains all other factory components. It does not alter the capacity of the magazine and provides better comfort by filling the semi-circular cut-out in the lower front area of the grip body. This product will only work on magazines equipped with double notches for the ambi magazine release.(Gen 4&5 magazines) It will fit Glock Gen 5 17/19/34.