Disapointing - LaserLyte Universal Laser Bore Sight

GR8 idea , but takes some time to assemble and make it "operational" . Batteries fit in to back of switch , which is gritty and difficult to turn ON and OFF . Caliber arbors to fit onto laser body are held onto body with tiny screws that do not readily screw through the arbors . Took a major amount of time to thread them . Once screwed onto body , must adjust screw tension on arbor to fit bore and hold body in place . There is no "recommended" distance to align scope to bore axis . Performed alignment in basement at 40 feet , rifle retained in Caldwell cleaning base . Laser bright on supplied target , aligned reticles vertically and horizontally to ZERO . Verified next day at 25 yard range . Should have taken LaserLyte with me , but did not . First , and second confirming shots were 6 inches high and 2.5 inches left . "On the paper" , but I expected better . Would recommend removal of batteries for safe storage . This test was done on a Ruger 10/22 with a Bushnell Trophy 4x10x40 . It now shoots half inch groups consistently with SK Standard Plus .