Description
Cold-rolled steel lapping tool chucks into a 3/8″ hand drill to easily X”XsquareX”X the upper receiver face on your AR-15. Helps ensure precise mating of barrel and receiver for added accuracy. Coat face of receiver with aluminum-oxide lapping compound; extra long pilot slides into the bolt carrier tunnel to maintain perfect concentricity with the receiver. Mfg: Brownells SPECS: Cold-rolled steel, in the white. 8 1/4″ (21cm) long, 3/8″ (9.5mm) diameter shank.
