Lug-Lok Upper Vise Block™ - AR15

Outstanding tool, very nice to be able to work on your barrel or replace barrels with only having the receiver in the way.

Works perfectly

Works as advertised. Is infinitely more convenient than removing accessories and clamping in a vice. Was able to remove and install 4 muzzle devices without having to do much more than pulling the upper and removing the BCG and charging handle. Would prefer to see a replaceable sleeve or scale for the bit that goes in the vice, but that is a quality of life improvement rather than a neccesity.