Check the listing for details. Premium 7mm Rem Mag/.338 Win/.264 Win Cartridge Red Laser Bore Sight US Seller. Condition: New. Listed at 14.99 USD. Features ---Insert batteries to turn on and insert into barrel (having made the gun safe) ---Projects a red laser beam from your barrel so you can correctly zero in your scope ---Precision machined ---Essential tool to ensure optimal shooting accuracy ---Must-own item - save wasting expensive bullets! ---Class IIIA laser, less than 5mW ---Comes with 2 sets UPDATED batteries ---Easy to sit perfectly in the bore. Sturdy brass construction. Fast gun zeroing and sighting. ---High accuracy to reduce cartridges and shells wasted, sighting range of the bore sight is 15 to 100 yards. ---7mm Rem Mag/.338 Win/.264 Win Cartridge Red Laser Boresighter for Scope Optic Sighting ---Premium Quality made for long lasting and accuracy. ---Nicely fits 7mm Rem Mag/.338 Win/.