I had tried searching in the past but since I wasn't a member when i started this thread, I wasn't able to come up with anything useful.
I should have gone back and started searching but this thread was already rolling. (and honestly, I forgot
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I've gone back and began reading some of the threads I found, I haven't found a lot of recent first hand dislike of CMMG though. A lot of 2nd and 3rd hand experiences, and some posts about old rifles. Not a lot of well explained Piston vs. DI discussion either, which is the reason a lot of us here began looking at CMMG, that and their excellent .22LR products.
Living in MO I'd like to give my money to a MO business if possible, but I won't do so for an inferior product or for a future of bad customer service.
The other suggestions I keep seeing are Spikes or BCM... I don't know anything about them. I'll have to do a little more research.