• Deluxe master kit adds the capability for use on .12 to .20 gauge shotguns, 0.17 to 0.50 caliber
• Unique adapter kit provides stable alignment producing  accurate bore sighting results
• Alignment target and storage pouch included
• Patented design
• Durable machined aluminum construction
• Unit includes (3) three LR44 Alkaline button cell batteries
• No metal-on-metal contact, will not scratch the finish of the barrel or damage your rifling