NcSTAR Vice Block Tool Features The NcSTAR Vice Block Tool is machined from aluminum and finished in a durable blue anodized coating that resists wear from repeated shop use. It is designed to insert directly onto the frame rail grooves of compatible Glock slides creating a stable mounting point for a bench vice. Once seated the block allows the user to gradually tighten the vice jaws onto the slide without marring the finish or distorting the rails. This secure hold makes tasks like sight installation barrel work and general slide servicing far easier to perform accurately. Built to fit most Standard Compact and Subcompact framed Glock models across 9mm .40 S&W .45 ACP 10mm .357 SIG and .45 GAP chamberings the tool covers the vast majority of common Glock pistols. It will not fit compact or subcompact slimline models such as the 42 43 43X and 48 so users should confirm frame compatibility before use. Care should be taken not to overtighten the vice jaws once the slide is secured. The NcSTAR Vice Block Tool gives home gunsmiths and professionals alike a dependable way to stabilize a slide for maintenance work. NC Star Vice Block Tool Specifications Manufacturer: NC Star Model: Vice Block Tool Color: Blue Material: Aluminum Compatible Hosts: Glock Standard Compact Subcompact frames Available At: GrabAGun