Crimson Trace Corporation -Rail Master Laser, Universal Rail Mount for handgun, rifle, shotgun, air soft, bows etc- very visible Green Laser CMR-206 This CM-206 Green Laser Sight fits onto any firearm with a M1913 Picatinny Or Weaver-Style rail. Ambidextrous control tabs allow the user To instantly activate or deactivate the laser. The human eye processes the color Green more effectively than any other color, and Crimson Trace offers the brightest Green Laser allowed by current law, (5Mw Peak, 515Nm, Class 3R). The CMR-206 Rail Master boasts 2 hours Of (Constant) run time on a single 1/3N Lithium Battery, And features a 5 minute auto Shut-Off for power conservation on the battery. Once you go online and register this laser CTC offers free batteries for life (yearly)- The CMR-206 offers 3 modes Of Operation: Constant-On. momentary and strobe (saves battery time). This allows The user To set their user mode based on personal preference. The unit Is quickly And Easily User-installed In moments And Can Be painlessly Transferred From Firearm To Firearm. The CMR-206 Is securely fastened using Crimson Trace's Secure Lock Technology (SLT™) with 4 different inserts for various rails and models. US FUNDS ONLY - US LOCATIONS ONLY