Brownells Brownells Brownells 75th Anniversary - A Shooting Heritage
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Essential for properly measuring the amount of the firing pin projecting through the bolt. Too little causes misfires; too much, pierced primers.


AR-15, Issue:11, Page:082
AR-15, Issue:11, Page:083
Big Book Catalog, Issue:69, Page:082
Big Book Catalog, Issue:69, Page:083
SPECS: Steel. 2" (5.1cm) long, 1⁄4" (6.3mm) wide.