Look on the side of the Orlite. There will be a circle with a "0" over another number (0/14, 0/20, 0/34, etc.) If the lower number is over 20, i.e., 0/20, 0/28, 0/34. etc. The mag will work. If the number is lower, give them to a friend or trade them. I do not recommend filing mags because of the loss of rigidity in the side wall of the mag.