#html-body [data-pb-style=MUVV7EJ]{justify-content:flex-start;display:flex;flex-direction:column;background-position:left top;background-size:cover;background-repeat:no-repeat;background-attachment:scroll}The Palmetto State Armory Custom Upper Receiver Vise Block is perfect for the DIY Builder. The vise block is designed to clamp your standard upper receiver into a vise firmly to prevent marring, distorting, or crushing your upper during assembly or maintenance. This tool is a great addition to any toolbox and has an unconditional lifetime warranty. An AR-15 vise block is a must-have for any armorer.