Anyone have a best wayor any way to self remove a welded on muzzlebrake,  It's on a 16 inch Bushmaster Dissy upper that I would like to do some modifications to the sight and gas block.  It appears to be REALLY welded on in maybe three spots aroung the brake.  As it is it would even be difficult to lathe it off because everything on the barrel is stuck there to rattle around as its cut down.  Any suggestions would be appreciated.

If you have access to a lathe, it shouldn't be hard to chuck up the barrel, assuming you can remove it.  The only thing to rattle around would be the barrel nut.  Slide it up the barrel and put a hose clamp on either side of it.  That should keep it in place.  Just touch the welds enough to remove the brake, then clean up the area.  Refinish in this case is likely to be needed.

Just beware of that FSB flying around while the lathe is turning.  That'll leave a mark!