Brownells AR-15/M16 Upper Receiver Lapping Tool Steel

Upper Receiver Lapping Tool Features Cold-rolled steel lapping tool chucks into a 3/8 hand drill to easily square 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. Upper Receiver Lapping Tool Specifications Cold-rolled steel lapping tool easily square the upper receiver face on your AR-15 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.