Sightmark Pistol Laser Boresights provide the most convenient and accurate method for sighting in pistols specific to the bore sights caliber. Simply chamber the bore sight like a regular bullet and a laser dot will show exactly where the pistol is aiming its easy to sight in your firearm or scope without firing a single shot. Live fire is only needed to fine tune the firearm being sighted to compensate for inconsistencies, such as bullet drop due to distance. Perfect for hunters, competitive shooters and law enforcement, the Sightmark Pistol Laser Bore Sight is sure to take the frustration out of sighting in almost any pistol. The bore sights are easy to use and will quickly save both time and money by avoiding prolonged live fire tests at the range use the extra ammo for honing those shooting skills and for the hunt. A lightweight carrying pouch protects the laser for convenient use in the field. The Sightmark Pistol Laser Bore Sight is available in the most common calibers for use with the most popular pistols. Features Precision Accuracy Reliable and Durable Fastest gun zeroing and sighting system Reduce wasted cartridges and shells Compact and lightweight Easy to pack and travel with Included in Package Battery Pack Carrying Case Specifications Laser Wavelength nm 632-650 LED Type Visible Red Laser Power 5 mW Battery Type AG5 2 AG3 3 Battery Life 1 Hour Range for Sighting 15-100 yards Dot Size 2 100 yards Operation On/Off End Cap Construction Brass Temperature C 10 to 50 SOLD QUANTITY 1