Noticed the problem this weekend while shooting my AR at distance.
I have a BCM 16" carbine upper with BCM full auto BCG, normal carbine buffer (also BCM) and a gas busters charging handle and I kept getting CLP/gas blown into my face while shooting. I've been planning on swapping out the gas busters with a BCM Gunfighter for about a week before I experienced this problem, so that might solve it but that's just a guess on my part.
Any thoughts or suggestions as to what might be causing it? The upper is pretty new (less than 500 rounds) and it should be in spec because its BCM
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Thanks, guys!




Thanks, guys!
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I have friends with ARs who DON'T run gas busters (again, don't know if that's the issue) who don't have this problem.

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