TexasCHLforum.com

Plastic can work well in a rifle. but the only plastic magazine I've ever heard of working well is the BX-* series for the Ruger Charger. but even that has metal lips. (AR 15 pistols are just chopped rifles.)

That being said Magpuls make a better than original equipment mag. The snap-on covers help keep grit and gunk out they are almost impossible to dent and they may be the most reliable removal magazine ever made. I just wish they would make a 20 round Dark earth model.