My CMMG gas piston was jamming. I couldn't figure it out, so I sent it in.

I'm not going to go all into the this happened then that did. I'll just say that CMMG's Customer Service, Justin in particular, has become world class.

I briefly thought about one of your "Mutant," 7.62x39 ARs. I gave up on the idea, thinking about service on such a new design.  In light of you customer service, I'm going to have to rethink that decision.  

Thank you again for such high quality customer service.

Great to hear..