Bushnell Laser Boresighter puts you "on" without pulling the trigger! It"s fast, easy and cost-saving, designed for the demands of gunsmiths and serious shooters! NO ammo wasted getting your rifle scope sighted. You get the bright red laser emitter and arbors for common calibers from .22 up to .50 cal., plus 12 ga. and 20 ga. shotgun arbors, so it"s practically universal. Runs on three LR-44 batteries (included). It"s 6" long, 8 ozs. Save time and money with this easy Bushnell Boresighter. Order Now! WARNING: You must be 18 or older to purchase Lasers. Lasers cannot be shipped to New York City; D.C.; MA; Canada or Puerto Rico. Lasers cannot be shipped Parcel Post. Please check your State, County and City laws for restrictions before ordering Lasers. Bushnell Laser Boresighter