Ultra-Bright XP daylight green laserlong life lithium battery scope reticle leveler & ballistic targeting software! Accurately boresights ALL rifles pistols and shotguns. Fits all calibers from .22 cal. to .50 cal. Plus 20 ga. and 12 ga. shotguns. No optional arbors required! Now includes ballistic targeting system software which calculates and prints a calibrated laser boresighting target to your specific requirements! Plus a laser line generator lens adaptor to project a laser line for precise scope leveling.