When I first receive the L2 my first shot would be much higher then the rest of the shots if I had not fired it in a while. I believe after removing reg back-and-forth between the large plenum and the stock plenum and cleaning it. A high first shot has been reduced. My initial impressions of the huma air regulator is it performs very similar to my stock reg with a standard deviation of 2.8 over 16 shot, with no high fist shot. I have not been able to do anymore testing yet do to a magazine cycling issue(broken valve pin ball, waiting on a replacement part to arrive). I will follow up with how huma air reg performs after I get a couple hundred shots through it.
Also after following some instructions I received from @raxim777 to adjust the stopper screw on the breech face. I now have a noticeable difference in sound reduction using the moderator insert.
What is this stopper screw you speek of and what did you do please?
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