Looking for an AR light? How about Green Laser Sights that can universally fit an AR, pistol, or shotgun? Crimson Trace brings the CMR-207 Rail Master Pro Laser Sight and Tactical Light System, fitting any of those if they're outfitted with M1913 Picatinny or similar accessory rails measuring at least 2-3/4 inches. The Crimson Trace Rail Master combines a powerful laser with a 400 lumen LED white light that can be used individually or together. This Crimson Trace laser light combo gives the best of both worlds in one compact, lightweight aluminum-bodied, easy-to-use accessory.