The front sight on my M38 is a blade type. The base is marked + .75 and T. The blade is marked -1 and it is 5.96 mm tall. I would like to replace the blade with one from a M96 (since I found a relatively local supplier that apparently has several different sizes in stock at a reasonable price). I need a taller front sight in order to bring my POI down about 6 inches at 100 yards. Does anybody know what marking I need on the M96 sight, or at least what height I should be using? In my manual for the gun, it mentions that a 1 mm change in the sight position yields a 15 cm change in the POI at 100 yards. I believe this is for the horizontal displacement of the front sight. Based on this, would a front blade of approximately 7 mm tall do the trick? What would the marking on a M96 sight of this height be?