The LG-304 LaserGrips feature an ambidextrous dual side-activation built into the grips. They have since been replaced by the newer Front-Activation LG-404 model in our line-up for the 1911 Officer's Compact and Defender sizes. (Grips/Laser only, gun not included). Specifications: - Activation Instinctive Activation; Dual Side Buttons - User Adjustable Both Windage and Elevation - Material Polymer Grip w/ Rubber Overmold Wrap-around activation - Warranty 3 Years Complete - Master On/Off Switch Yes - 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 most 1911 models with grip screws measuring 2-11/16" apart Manufactures Website Address www.crimsontrace.com Warranty Information