Product DescriptionDial in your optics quickly and confidently with the Shooting Made Easy Sight-Rite Bullet Laser Bore Sighter. Precision machined from brass and factory aligned for caliber-specific accuracy, this compact tool projects a bright, high-output laser to help you establish a reliable point of aim before firing live rounds. Designed for .300 Winchester Magnum and .338 Winchester Magnum chambers, it delivers repeatable results and includes three alkaline button cell batteries so you can start sighting right out of the box.Product Highlights Caliber-specific fit for .300 Win Mag and .338 Win Mag chambers Precision-machined brass casing for durable, consistent alignment High-output laser provides a clear point of aim for fast zeroing Factory alignment ensures dependable accuracy Includes three alkaline button cell batteries for immediate use Specs Product Type: Bullet Laser Bore Sighter Series: Sight-Rite Compatible Calibers: .300 Winchester Magnum, .338 Winchester Magnum Material: Brass Power Source: (3) Alkaline button cell batteries (included) Laser: High-output (class not specified) Brand Name: Shooting Made Easy Manufacturer Part Number: XSI-BL-300-WIN UPC: 813628014768 Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer.