I used the afore mentioned Brownells Universal wrench to remove a factory barrel, and it was stubborn.
Here’s the combination of materials and actions that ended up working for me:
- Brownells Universal action wrench (engages the top receiver flat nicely)
- Mech force barrel vise (a more spendy one might be better but this worked)
- a 36” section of 1-1/4” galvanized steel pipe to slide over top of the handle of the action wrench to use as a cheater
- brown sugar
- hammer
- Kroil
Let Kroil soak into receiver/barrel joint overnight.
Clamp the barrel in the bare aluminum vise blocks, with brown sugar on top and bottom of barrel surface.
With action wrench installed and cheater bar slid over handle, give a few swift whacks to the cheater handle with a big hammer. Make sure you’re hitting it in the right direction.
It’ll work.