i have a large excess of AR mags,esp aluminum. i am asking if anyone has any experience with the various brands. i have brownell,duramag,bravo and palmetto. BTW the guy that built my excellent custom AR spent time in africa and mid east as an operator. he swears that the only mags he trusts are the brownells editions. any input or experience comparing these ? also,comparing to pmags. he does relate a serious failure with pmags-shattering when dropped out of pouch when exiting a vehicle. i suspect gen 2s. my smith reports a similar failure with aluminum mags,so only trusts Ps. planning on offing a few as i am in the hunt for an ak-74. any comparative knowledge,opinions or experience?