Clymer's 300 AAC Blackout Live Pilot Finish Reamers are made with durable M42 Cobalt HSS, enhancing tool life and performance.
The reamers feature a live pilot spindle with industry-standard threading for easy bushing attachment and oil grooves for muzzle flush chambering.
Designed to SAAMI specifications, the reamers have a 7/16” shank with Weldon flat and allow for interchangeable bushings to achieve the proper bore fit.