Great tool - Real Avid AR10 Lug-Lok Upper Vise Block

The pins that fit into the flat tail hold the tool almost horizontal in the vice. This is a real help. There is also a block that fits in the upper that protects the upper from contacting the vice. These extras really improve the experience of replacing a muzzle device. If you have used other rods, you know the rod can slip in the vice and move downward. The pins and the block hold it firm. This is a great tool. Real Avid has never disappointed me with their tools.