DaWhip Posted January 26, 2021 Report Share Posted January 26, 2021 I finished building a new AR10 about a month ago and put about 50 rounds through it so far. It has not ejected a round, cycled, or locked back on empty mag yet. I'm looking for any advice that anyone can offer. My gut feeling is that my lightweight bolt doesn't have enough mass to compress my buffer. I'm looking at ordering a lighter buffer spring, but thought I'd check first as it may be gas related and I can't find tube diameter info. Specs of the build are below for perusing and advice. For what it's worth, I was able to zero and take a couple of deer this year while manually cycling it, so at least it goes bang and shoots straight. It will lock back on an empty mag if cycling by hand and the bolt stops at random lengths along it's travel, but never far enough to eject the spent case. Aero Precision M5 upper & Lower Rubber City Armory Titanium BCG Brownells 20" barrel, Rifle length gas w/gas block Aero stainless gas tube, rifle length Leapers UTG A2 Fixed stock kit for AR308 including rifle length buffer tube, buffer, & spring Quote Link to comment Share on other sites More sharing options...
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