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Gunsmithing Blue locktite

Try a soldering iron right on the head of the fastener or a hair dryer on high before open flame.

I agree with this. I usually do a dryer on high or heat gun on low for blue. Normally that'll free it up without doing anything excessive. Red is a different story.
 
All of the above are solid options. One trick that I use is a cheap bit that fits my fastener. I hold it in the fastener and hit the bit only with a propane torch. That heat travels through the bit into the fastener only.
That’s a great idea, I’ll have to remember that. This is on the threaded tube for the stock but had quite a bit on the fasteners. Thanks again.