The Tiger Rock Inc. LBS38 .38 Cartridge Laser Bore Sighter is engineered for precision, optimizing your firearm accuracy like never before. Crafted with high-quality aluminum, it seamlessly fits into .38 chambers, ensuring dependable alignment when adjusting your optics and sights. Featuring a visible red laser with a wavelength of 635-655 nm, this bore sighter guarantees a clear targeting experience at distances up to 30 yards, while its compact design enhances storability. Fits .38 Chambers Brass casing LED Type: Visible red laser Laser wavelength: 635-655 nm Laser beam: < 5mW Sighting range: 20-30 yards Dot size: 1.5" @ 100 yards Requires (3) LR41 button cell batteries Elevate your shooting experience with the Tiger Rock Inc. LBS38, an essential tool for all gun owners.