OK not sure what decorum requires for this, but I just saw on another forum I am a member of a post about PMAGs. I wont name the forum, but essentially out of several PMAGs and several training iterations there have been significant splits along the spine of the mags (he threw up some pics too). Teh good news story is MAGPUL customer service was very responsive to the need according to him. Know this is kinda vague, but just wanted to throw it out there. FWIW
"I'm your brother, just make it count."