To my mind the lancer surrenders the biggest advantage of a polymer magazine, the plastic feed lips. Metal feed lips can become subtly warped or dented in a way that is not immediately obvious, which can result in magazine related malfunctions. The lips on apmag will crack and break off rather than warping, so any failure of the magazine is obvious. It also takes more force to break the lips on a pmag than to warp metal feed lips.
I've had issues with Lancer spitting rounds when they shouldn't. More than one mag. 4 to be exact. I avoid them.I’m struggling between the lancer mags and the gen 3 pmags to get for my new rifle, which would you prefer and why?