Sightmark .223, 5.56x45 NATO Boresight with Red Laser

Product Description Tested and recommended by the National Tactical Officers Association, the Sightmark.223 Boresight significantly reduces wasted cartridges and shells. Chamber the device in your .223 rifle like a regular cartridge, and a red laser dot shows exactly where you're aiming. Simply adjust your sights or scope, and save your extra ammo for the hunt. Includes a carrying case, three (3) AG3 batteries, and instructions. Amazon.com The Sightmark Laser Boresight provides a convenient, accurate, and cost effective method for sighting in rifles and shotguns of all types. Easy-to-use, simply chamber the boresight like a regular bullet and a laser dot will show exactly where the rifle is aiming--without firing a single shot. Perfect for hunters, competitive shooters, and law enforcement, the Sightmark Laser Boresight offers a 15 to 100 foot sighting range with a 632 to 650 nm laser wavelength. The boresight comes with a lightweight carrying pouch to protect the laser for in the field. Specifications: Laser Wavelength (nm:) 632 to 650 LED Type: visible red laser Sighting Range: 15 to 100 yards Dot Size: 2 inches at 100 yards Operation: On/Off End Cap Construction: Brass Temperature: -10 to 50 Celsius Power: <5 mW Battery Type: two AG5 or three AG3) Battery Life: one hour