Stubborn Mossberg 590 Magazine Tube

A propane torch is what you are going to need to get the mag tube off. It is secured with thread locker. Heat the bottom of the receiver where the tube goes through until you start to see bubbling at the joint, then unscrew with your strap wrench.

Better buy one then. They’re like 10 bucks.

Try a rubber strap wrench. That will grip better than sand paper.

Hair dryer is worthless on loctite. Get a torch.

Does your hair dryer go to 500 degrees Fahrenheit?

https://www.loctiteproducts.com/en/...cts/specialty/loctite_threadlockerred271.html

Not sure if this is the type mossberg uses. But if so, all a hair dryer will do is raise your power bill.

Did you read the part about heating it until you see bubbling?

A barrel vise and action wrench is what I use.

And a propane torch.

Heat guns get pretty darn hot but the heat transfer is different. It seems like it should still work. The aluminum receivers really dissipate the heat fast on those Mossberg.

SOP for seized threads:
-apply Kroil (or other light penetrating oil). Go away, come back tomorrow.
-apply Kroil, heat until the Kroil is just seething/bubbling/boiling out of the joint. I use a propane torch, a hairdryer won't cut it. You're boiling the Kroil into the joint.
-apply torque

And yes, square-profile threaded thin-wall tubes can be a bear! If it's Loctite that's resisting you, when you get enough heat, it'll unscrew so easily you'll wonder what the big ordeal was.