45 GAP (Glock Automatic Pistol) Case Length Gauge Custom over-run.
This item is made to SAAMI specs.
WARNING: Steel parts in this product may be alloyed with trace amounts of lead and other elements which are known to the State of California to cause reproductive harm and cancer. For more information, go to www.P65Warnings.ca.gov. To prevent exposure, do not alter the product by welding, grinding, etc.