Lee 300 AAC Blackout Case Length Gauge is a precise, easy way to trim to length and square the case mouth. Use with the Cutter and Lock Stud.
Trim to length 1.348 to 1.368 inches.
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WARNING: This product may contain steel 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.