Quote:
Originally Posted by Recusance
\ I am really leaning toward the gas block being the culprit.
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The way I align gas blocks is to plug the chamber and blow air into the muzzle. Just listen to the air flow coming out of the gas tube while moving the block to find the position with maximum airflow. The method is quick, reliable, and requires no special tools. I use a fired case for the chamber plug. The method is also a check for obstructions of the gas ports and gas tube at the same time without disassembling anything.