Just did this today on a M1014 I want to thank StrangerDanger and all else who have replied responded or contributed to this thread. With StrangerDangers instructions this was simply easy. This only took me around 30 seconds of heat using my acetylene torch that I use for plumbing. I adjusted the flame to produce a low heat and placed heat directly to nut for 30 seconds nut broke loose I then removed nut and tried to turn tube no luck. I then heated tube for 30 seconds it turned smooth as butter. I then use Hoppe's 9 to clean my threads it removed the old thread locker like a charm. Also I read where someone asked about thermal cracking or discoloration. I experienced 0 discoloration or thermal cracking after applying heat directly to nut and tube using an acetylene torch.