Worked great in my psa ar10 - VISM AR10 Upper Receiver Block

I used this in my palmetto state armory 308LR a.k.a. AR10. I used it to remove factory installed muzzle break this worked like a charm holding the barrel very still and no fear of damaging the upper while holding it in a bench vise. I was very impressed at the construction and ease of use. If you enjoy ar builds this is one of the tools that you'll love to have in your arsenal (pun intended) ...lol. great product, low cost a must have.