
Originally Posted by
Not_A_Llama
Sorry about the delay in response - the forum didn't show your post as new to me.
In my experience: Getting too much gas into the system can sometimes cause failure to lock back on a mag with a single round. Exacerbating the issue, some AGBs have steps that are too big, and you can step from undergassed to overgassed very quickly. I've found that using a continuous infinitely adjustable gas block is better than a detent-based system in large frame ARs, because they're much more gas-sensitive than small frames.