The Sightmark Universal Laser Boresight provides the most convenient and accurate method for sighting in rifles and pistols of all types. Simply place the base of the boresight onto the end of the barrel of your weapon and it will attach magnetically. A laser dot will show exactly where your gun is aiming; it&&';;s easy to sight in any scope without firing a single shot. Live fire is only needed to fine tune the weapon being sighted in order to compensate for inconsistencies, such as bullet drop due to distance. Perfectfor hunters, competitive shooters and law enforcement, the Sightmark Universal boresight is sure to take the frustration out of sighting in almost any gun. It&&';;s 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 bore sight for convenient use in the field. The Sightmark Universal boresight is protected by a Limited Lifetime Warranty. Easy to pack and Traviel Fast gun zeroing and sighting system Reduce wasted cartridges and shells Compact and lightweight Comes with a carrying case