Originally Posted by
tiger seven
I bought ten PMAGs (black, non-windowed, dated 07/07) and when brand-new, four of them wouldn't drop free from my LMT lower. However, after only two or three uses, they all now drop free. Whatever small amount of excess material there may have been on those four particular magazine bodies didn't last long.
I have heard of some people lightly sanding their PMAGs to get them to drop free. I guess it works, but you could also just use them a few times and see if they "get fixed" naturally. If you can't go shooting until next week, it's a good excuse to practice mag changes at home. :)
Derek