The LG-403 replaces the single-sided activation model, LG-203, with an instinctive activation front strap actuation switch. The rugged polymer side panels are connected together with a durable rubber strap which provides added purchase while shooting. Whether the Mark II or III is used in plinking, hunting, or professional purposes, the LG-403 adds a higher level of accuracy and faster target. (Grips/Laser only, gun not included). Specifications: - Activation: Instinctive Activation; Front - Hard Polymer - User Adjustable: Both Windage and Elevation - Master On/Off Switch: Yes - Warranty: 3 Years Complete - Beam Intensity: 5mw peak, 633nm, class IIIa laser. Maximum output that federal law and technology allow. - Dot Size: Approximately 0.5" diameter at 50 feet. - Power Source: Two #2032 lithium batteries (included); over four hours of on-time use and a five year shelf life - Fits: Ruger Mk. II and Mk. III Manufactures Website Address www.crimsontrace.com Warranty Information