Product Summary
The AR-STONER Upper Receiver Lapping Tool is a precision machining accessory designed to square the upper receiver face of an AR-15. By using this tool with a 3/8″ electric drill and a lapping compound, you can significantly improve the mating surface between the barrel and the receiver. The tool features a built-in pilot that fits into the bolt carrier tunnel to ensure perfect alignment throughout the receiver. This is an essential component for builders looking to achieve improved accuracy and a professional-grade fit for their firearms.
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