This high quality alignment reamer is ground from one piece of stock. The stock is ground into a 9mm/38 reamer from M2 tool steel.
On a compensator gun, the alignment reamer is inserted into the barrel and then a cut is made to make the compensator concentric with the bore.
The pilot measures .3445".
Warning: 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. To prevent exposure, do not alter the product by welding, grinding, etc.
For more information, go to www.P65Warnings.ca.gov.