O.K.,I looked at what I did to the marauder mag so it will fit in the rapid,I ground about 1/16th of an inch off the back side of mag above the center hole,and I doubled up the two face tape so it is 1/8th inch thick on bottom of mag and I also put some on back of mag so you can only insert it so far.I don`t do well at posting pics but if you give me a ring I could help you out.414-238-5645
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