Saturn barrel vise?

Im looking for a barrel vise for an AR. Anyone use the SATURN PRODUCTS - SCG AR-15/M16 ACCU-GRIP BARREL VISE JAWS?

I don’t like blocks that are bored for a specific diameter barrel. I use plain aluminum blocks. The only job they are used for is installing or removing muzzle devices. There is little chance of slipping when the torque values are only 20-30 f/lbs.

I need to remove a barrel on. 9mm upper. The shell deflector is
in the way of the action block. I need to use a barrel block to remove the barrel nut

Won’t a Reaction Rod work?

Different setup. Uses a regular bolt, not a bcg. So no lugs

Isn’t the shell deflector removable?