Originally Posted by
M4Fundi
FTS Thanks for the info,
I guess forgive my ignorance and contribution to Internet Myths, but I was under the belief (erroneously I guess) that the P-Mag Cover's 1st purpose was to prolong feedlip spread spec life and only as a dust, ding protector secondary.
I am a BIG fan of Magpul products and use MANY, but was under the belief that the P-Mags have many advantages over aluminum, but had one disadvantage of lower feed lip life if under constant load. I "thought" a trainer from this forum posted showing a stack of P-Mags split/cracked at the front of feedlips. I guess I am mistaken and hope I have not contributed to more myth with my question.