Zero in with confidence using the Sightmark Triple Duty Universal Green Laser Bore Sight the ideal solution for precise tool-free sighting across a wide range of firearms.Engineered to work with .17 to .50 caliber rifles shotguns and pistols this universal bore sight eliminates the need for multiple attachments or barrel inserts making it a truly versatile and user-friendly upgrade for any shooter.Crafted from lightweight durable aluminum the unit features an innovative self-centering retractable arbor and a magnetic base that securely attaches to the muzzle-not inside the barrel-protecting your firearm from potential damage and allowing for easy repeatable alignment.Its high-visibility green laser offers exceptional contrast in both indoor and outdoor environments allowing for quick and efficient sight-in at 25 yards.Ideal for hunters competitive shooters and tactical professionals this boresight helps reduce wasted ammo and range time by allowing you to dial in your optics before firing a single shot.It's perfect for new setups post-travel zero checks or fine-tuning under field conditions.The bore sight comes complete with a protective carrying case a CR2 battery and easy-to-follow instructions making it a practical portable addition to any shooter's gear.Features / SpecsCompatibility: Universal fit for .17 to .50 caliber firearms (rifles shotguns and pistols)Laser Type: Green laser for enhanced visibility and precision targetingMounting System: Magnetic base with self-centering retractable arbor for muzzle attachmentMaterial: Durable lightweight aluminum constructionEffective Range: Sight-in recommended at 25 yardsIncluded Accessories:CR2 batteryCarrying caseUser InstructionsPurpose:Ideal for scope alignmentZero confirmationTraining aidUser Base: Great for huntersSport shootersLaw enforcement professionals