Mas, Thank you for sharing your insight and knowledge in this forum! I read one of your posts that it was not a good idea to use the full size G20 mags in the sub-compact G29 and can not recall an explanation. This topic was not covered in the Armorers, Advanced Armorers or Instructor class. My daily carry is a G29 with the reloads being the full size G20 mags. I just want to make sure that if I need a reload it's gonna go "bang" and not "click". I train with the above setup but "range conditions" are a far cry from "real world" conditions. Thanks in advance!!