09-14-2020, 07:39 AM
You don't have to go all the way up to 80 for Milspec barrel nuts. We know the range from 40 to 80ft lbs is so that the nut can turn at least one tooth to clear a path for the gas tube. But if you can't go all the way to 80 without something breaking then stop, mark the offending tooth, unscrew and file it off. You don't need all 20 teeth to do it up. Just make your own gap for the gas tube. As long as it is as least 40lbs that's all you need.