TPO .277 Red Laser Bore sighter Boresight

Laser Class: Class IIIA laser; 5mW or less. High accuracy to reduce cartridges and shells wasted, sighting range of the bore sight is 15 to 100 yards. Made to fit the .277 chamber, caliber specific. Easy to sit perfectly in the bore; Sturdy aluminum construction. Package Included one bore sight and 2 sets of batteries, total 6 batteries