This versatile system will work on everything from .17 to .50 caliber and 12 to 20 gauge shotguns. Comes with an alignment target and durable storage pouch.

Features :

• For use on .17 to .50 caliber and 12 to 20 gauge shotguns
• No metal on metal contact, will not scratch the finish of the barrel or damage your rifling
• Includes calibration target and storage pouch
• Unit includes (3) three lr44 alkaline button cell batteries