Ghurka Posted June 1, 2017 Report Share Posted June 1, 2017 I want to use the barrel for a different build so I took off the hand guard and low and behold it's an "Enhanced" upper. The barrel nut looks like a Mil Spec barrel nut that's been screwed into the upper barrel extension. I removed the little set screw that's in the barrel extension just in front of the ejection port and the barrel nut will not move. I applied heat, still no joy. Am I forgetting something? Quote Link to comment Share on other sites More sharing options...
survivalshop Posted June 1, 2017 Report Share Posted June 1, 2017 https://aeroprecisionusa.com/media/docs/bar-barrel-nut-instructions.pdf Quote Link to comment Share on other sites More sharing options...
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