Clamping a receiver in a bare vise is a fast way to mar a finish or bend a part. These armorer’s vises, cradles, and vise blocks hold your upper, lower, or complete rifle securely so you can work with both hands, whether you’re torquing a barrel nut, staking a castle nut, or swapping a trigger. Pick a block that matches your receiver and handguard, then add a tool kit or specialty tools to finish your setup.