Quick and easy scope and sight alignment tool. Fits .177 caliber to .50 caliber plus 12, 16 and 20 Gauge shotgun barrels. Works on rifles and pistols (with minimum 3.8" barrel length). Save time and ammunition by sighting in your scope using the laser boresighter. This unit is one-piece (excluding bore adapters) to avoid mis-alignment issues as found on some laser boresighters where laser may no sit completely in-line with the bore rod.
