ProMag Vise Block for GLOCK 9mm Luger, .40 S&W, and .357 Sig Polymer Black
This block allows you to easily and painlessly work on and install parts in your GLOCK. Effortlessly install sights, extractors, triggers or any other part or accessory. Just lock the vise block into your vise. The block slips into the magazine well and is held in place by the magazine catch. The Vise Block for GLOCK is constructed of black injection molded polymer.