The MBS-1 LaserLyte Laser Bore Sighter incorporates LaserLyte's patented one-piece design and caliber-fitting systems. The Laser Bore Sight is fifty percent smaller than the previous model. This easy-to-use product can get a shooter within three to four inches of the bullseye at 100 yards in about three shots. Constructed from tough T6 aluminum, the Laser Bore Sight comes in a sleek red finish and works great on any weapon with at least three inches of barrel length. The Laser Bore Sight makes sight-in sessions a breeze for scopes, lasers or iron sights on any firearm from .22 to .50 caliber with included adapters. For maximum versatility the system also works with new accessories (sold separately), including a shotgun adapter for .50 to .75 caliber and improved scope leveler. The Laser Bore Sight activates with a roll switch and is powered by three 393 batteries that provide one and a half hours of continuous use. This unit is also for modern rifles and its modest design works great with most flash suppressors and muzzle breaks.