Originally Posted by
bigx5murf
I bought a gen1 ptac back in 2014, and put the build on hold because of threads full of issues like this one.
Anyway, couldn't resist the sales, and picked up a gen2 18" nitride upper. Put 140 rounds through it in the past week, and it's been trouble free.
Only issue seems to be related to how over gassed it is. I'm throwing brass at 2 o' clock, and getting gouges on the neck of my brass.
Would a heavier buffer help? My lower has the PSA H buffer currently
A heavier buffer will sort of help, but an adjustable gas block will cure the over gassing.
“You have made us for yourself, O Lord, and our heart is restless until it rests in you.” -Augustine
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