Nikon P-Series Riflescope Picatinny Mount for 1 Inch Tube N/A Made in USA Allows Proper Height, Eye Relief and Forward Position for Charging-Handle Access on Virtually Any Rifle Strong-Yet-Lightweight Alloy Construction For One Inch Tube Diameter Riflescopes, Fits flattop picatinny rails Reversible 2-Piece Mount Provides Extreme Mounting Flexibility Made in the United States of America