Brownells 5/16" x 9.50" Piloted Barrel Liner Drill Bit

The Brownells short, piloted barrel liner drill bit is an essential tool for gunsmiths aiming to reline firearm barrels with precision and efficiency. Designed to accurately follow the original bore, this drill bit ensures the creation of a straight and true hole, facilitating the proper installation of barrel liners. Pilot-guided design - the integrated pilot precisely navigates the drill bit along the pre-existing bore, ensuring optimal alignment and mitigating deviation throughout the drilling operation Constructed from high-speed steel, the drill bit provides outstanding durability and retains its sharpness, even when used on hard barrel steels Enhanced flute geometry - incorporating advanced deep hole flute design and a precision-engineered helix angle, the drill bit optimizes chip evacuation and minimizes jamming risk, ensuring seamless operation Enhanced web architecture - the advanced reinforced web design ensures precise hole dimensions, delivering a robust structural foundation for the barrel liner's optimal performance