30 adapters for enhanced compatibility. With 30 included adapters, the KinZon red dot laser fits perfectly across calibers from .17 to .78, compatible with rifles, pistols, handguns, hunting shotguns, and optical sights. Purchase one set that works with most of your firearms. Bright and clear laser beam projects a vivid red laser (Class IIIA laser, less than 5 mW), enabling clear and precise targeting in all weather conditions, even in direct sunlight or low visibility. Provides accurate reference for quick and precise zeroing of scopes, saving time and money without using ammunition. Additional tip enhances laser stability. The kit includes an extra tip for calibers .54–12GA, which stabilizes the laser pointer at the muzzle. High-quality aluminum material. Made from premium aluminum alloy with high-end craftsmanship, creating a finely textured metallic surface. On/off button with extended battery life. The sight features a pressure switch for convenient control—simply press to turn the laser on or off. Equipped with an 800 mAh CR2 battery for long runtime. Easy to use. Simply select the correct adapter size and insert the laser unit into the barrel. Zero your scope in just a few minutes. Note: Manual zero calibration of the laser is essential before use and is a critical step to ensure accurate target alignment. Remove the sticker on the sight head to reveal four adjustment screws. After installing the laser into the barrel, adjust the zero using these four screws, which correspond to up, down, left, and right directions.