This LaserMax laser is designed to work exclusively with Ruger 10/22 Rifle models featuring a barrel band. The bright red 635nm continuous wave laser is visible out to 100 yards in good lighting conditions and is pre-aligned at 25 yards, but it can be easily adjusted for windage and elevation. The laser is constructed from Fiberglass-Reinforced Nylon (FRN) to withstand exposure to the elements, and it comes installed with a 1/3N Lithium cell battery for approximately 2 hours of continuous run time. The two integrated Picatinny rail surfaces are ideal for attachment of additional accessories, such as a tactical light or infrared laser.