The Smart-Fit AR15 Vise Block is the best lower receiver vise block youll ever use. Magwell sizes have a notoriously wide range of tolerances, and traditional blocks create wiggle and wobble on a gun vise. Smart-Fits design solves that. It expands to fit any AR15 magwell, making loose, sloppy fitting blocks a thing of the past. Insert the block into the magazine well and simply rotate the adjustment handle to tighten the fit. This block can also be used with an inverted lower receiver to work on pistol grips or allow easy access to the underside of your AR15. For hassle-free cleaning, we included the AR15 Pivot Lock for hands-free access to the chamber and barrel.
