Originally Posted by
moxie
Well, you're good to go.
I will reiterate that there's no need to download 30 round Pmags to 28 rounds (or 20 rounders to 18), despite what your ROK friend told you. That downloading issue arose in Vietnam in the '60s and continued through the '70s when there were multiple problems surrounding the M-16, including ammo (powder), cleaning/lubing procedures, and mags. We had some steel mags at one point (the crosshatched version) that couldn't be counted on to feed at all! The ROKs were there and they used our stuff. But, it's all been fixed or the AR platform wouldn't even be around now, much less as popular as it is.