That's not his problem. All the AX mags do is add a front attachment point, but are otherwise identical to standard aics mags....and standard aics mags work fine in AX chassis. I'd still like to see the bottom of the magwell as there may be something else going on, but it's probably a mag latch issue...may just need a couple strokes of a file....sounds like the mags aren't able to insert far enough in to engage the latch with the bolt closed....shaving it down ever so slightly would allow it to engage sooner.