I've recently become interested in this 3 gun deal. I've started building an AR on a cmmg billet lower. Lower is done (for now) and I'm not really sure what to look for barrel wise. I'm just used to the m4 I toted in Afghanistan and it was a hunk of crap. I'm thinking Midwest industries newer billet upper but don't know a lot about em. I'm a little out if my realm on this one I'm generally a long range guy, So anything would be helpful at this point. Thanks guys.
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