Yes. It is sort of a pain to get the nut cleaned up to do another install. Some just spend the money to avoid having to mess with it and buy another nut. I am cheap, so I clean them up and reuse them. It is my opinion that a heat gun gives better control of the temp than a torch to keep from getting something too hot and having the nut warp or something wonky. It's probably an illogical concern, but it makes me feel better.can you heat it up after the barrel is toast to remove the barrel nut?
Someone may have a better chemical brew to get the loctite off. I just use mechanical removal with a brush, knife, pick, whatever I have and some brake cleaner or alcohol to get it off. It's not fun, but it saves buying a new nut.