Brownells .38-40 Muzzle Brass Pilot for Bore Lapping

The Brownells .38-40 Muzzle Brass Pilot is a precision-machined brass pilot designed to guide lapping tools and cleaning rods into the muzzle without damaging the crown or rifling. Made from brass to prevent scratching barrel steel, it is sized for .38/357 caliber (.357–.359") bores. An essential gunsmithing accessory for accurate bore work and barrel maintenance.