The Crimson Trace Lasergrips platform is a decisive tactical advantage for handguns and changes the way gun owners approach personal protection. It offers immediate targeting laser beam when you hold your gun in a natural firing grip. The Instinctive Activation, saves precious time when seconds count. The Lasergrips features a master on/off switch, easily user-installed with zero modification to your firearm and are completely user-adjustable for windage and elevation. *Note- not compatible with ambidextrous safety levers. We stock shortened ambi-safeties from Wilson Combat in black and stainless. Gunsmith installation is required. ** fits Colt (Officers and Defender), Kimber (Compact, Ultra-Carry and Ultra-Elite), Para-Ordnance (Compact, Single-Stack), Springfield Armory (Compact and Ultra-Compact) Wilson Combat and most other 1911s with grip screws measuring 2-11/16″ apart.