This laser calibrator is made of high-grade aluminum alloy material, lightweight, high strength, corrosion resistant, and designed for long service life. Featuring a highly accurate, adjustment-free design, the calibrator uses infrared light with a straight tube for convenient and precise alignment. Includes an 8-hole adjustable adapter, compatible with calibers from 0.177 to 0.50. Features: - Constructed from high-grade aluminum alloy, offering lightweight durability, high strength, and corrosion resistance for extended use. - Infrared laser technology delivers bright, clear, and visible light over long distances, enhancing calibration accuracy. - Precision-engineered with a fixed focus and straight-tube design for reliable, tool-free setup and improved ease of use. - Simple and sleek battery compartment design; tail cap unscrews easily for quick battery access and replacement. - Equipped with an 8-hole adjustable adapter, suitable for firearms in calibers ranging from 0.177 to 0.50. Specifications: - Name: Laser Calibrator - Material: Aluminum alloy - Color: Red, Green (optional) - Battery: 1 x CR2 battery (included) - Power: Infrared laser