I have 4 Korean mags & after a little tweak to the feed lips made them reliable. The mags can now be dropped & the rounds will not pop out which means they will not get to the last 2-5 & pop out of the mag while rocked & locked.
Also, the National mags in 20 & 25 rounders function flawlessly for me too!
Also, the National mags in 20 & 25 rounders function flawlessly for me too!