Send it back to Armalite to mod the magwell into an A model?
Blasphemy! <laughs>
The standard Armalite 20 round mags are outstanding. I've probably got about 40 or 50 of those sum-bitches laying around, and have never had an issue with any of them. I understand your "common mag" theory though. I tried to stay in that arena also. Other than a G3 clone that I bought years ago, and an SBR FAL, all my other 7.62 battle rifles are AR-10's. Which is why I stayed with the "standard" mags. Plus, the fact that I'm just an all around 10B junkie. It wasn't until recently (last year that is) that I finally branched out into the LR 308 side, and had to start building up the PMAG count. Also mighty fine mags....just for the record.