Originally Posted by Squawk
I can't get it off. No I am not in a ban state. I'll just have the armorer fix it. This is my first build. I don't wanna break anything.
You would need a barrel block and a vice to do that. More bubbasmiths that work at gunstores ruin good ar15 using just an action block for putting on muzzle devices than anything. Its a common mistake.
Im sure you have heard folks complain about it too. "Took my ar in to get a muzzle device installed, now it the sights dont line up." That happens when excessive torque is applied using an action block and the barrel index pin cams against the reciever index notch.
To any work on the muzzle device the gas system has to be removed and the barrel clamped securely in a vice. I use a block of hardwood drilled out to 5/8 the diameter of the barrel the cut the block in half clean the barrel in the clamping location close to the muzzle as is practical. Put some rosin on the blocks clamp everything in the vice tight so it can be worked on without damaging the gas system or reciever.