Universal Green Laser Bore Sighter Kit for .17 to 12GA Caliber Rifle, Pistols, Handgun, Laser Bore sight Kit with 2 Sets of The Batteries

【Clean Laser Beam】: Laser sighting kit emit green laser beam ( Class IIIA laser, less than 5mW ), providing a precise reference for you to quickly and accurately zeroing your scopes, saving your time and money without any ammo.
【2 Sets of Adapters 】: Barrel Laser come with 2 Sets of Adapters fit 0.117 to 12GA caliber for pistols, rifles, shootguns, and scopes. So you just choose right size adapter and place the laser unit in the muzzle.
【Upgrade Press Button】: Our latest bore sight not only adds the press switch to convenient to control but also adds the automatically adjust focus function for zeroing.
【Longer Battery Life】: 800 mAh Large Capacity Battery - 2 sets of CR2 battery has ultra-long battery life and longer service life.
【What You Get】: 1 * Green laser bore sight, 2 * 800mAh CR2 Batteries, 2 Sets of Adapters (fit 0.177 to 12GA Caliber),1 * Screwdriver,1 * Instructions.