He's a gunsmith, he knows what he's doing. Check around, a few stories of guys breaking uppers using those style. I'd much rather use barrel blocks over that option.
I don't disagree, but it doesn't mean they can't be used. The one gunsmith I know well has been using a vise block for years without any problems, because he uses it properly. Most times people have broken the upper it is their fault for applying too much torque (far above what is specified).
As far as for me, a man's gotta use what he has at his disposal




















































