Wheeler AR 15 Receiver Lapping Tool. Upper receiver/barrel alignment is critical to accuracy. Also honing the surface can produce optimal positioning of barrel nut so ideal torque can be achieved along with proper gas tube hole alignment. Use with a battery powered or electric drill to square the receiver face on an AR15. Precision alignment of AR15 barrel and upper receiver. Helps align the gas tube hole with the barrel nut holes. Helps align front and rear A2 style sights. Flex Driver Shaft 220 Grit Lapping. Compound Steel Construction with a Black Oxide Finish. Specifications for Wheeler Fine Gunsmith Equipment AR 15 Receiver Lapping Tool: Manufacturer: Wheeler Engineering Condition: New Gun Model: AR-15 Features of Wheeler Fine Gunsmith Equipment AR 15 Receiver Lapping Tool Use with a battery powered or electric drill to square the receiver face on an AR-15 Package Contents: Wheeler Fine Gunsmith Equipment AR15 Receiver Lapping Tool What firearm models does the manufacturer say Wheeler Fine Gunsmith Equipment AR 15 Receiver Lapping Tool is compatible with? The manufacturer suggests that Wheeler Fine Gunsmith Equipment AR 15 Receiver Lapping Tool is compatible with AR-15Wheeler 156757: AR 15 Receiver Lapping Tool