The flagship LG-401 is our most popular 1911 laser sight model for Government and Commander variants. Featuring a rugged polymer side panels and a rubber overmold activation button these are the recommended Lasergrips for most 1911 shooters. Standard to Crimson Trace Lasergrips the LG-401 features instinctive activation. This means that the laser sight automatically springs to life when the weapon is held in a natural firing grip. This product is not compatible with ambidextrous safety levers. We stock shortened ambi-safeties from Wilson Combat in Black and Stainless. Gunsmith installation is required. Lasergrips fit 1911 and 1911A1 Full-Size Frames: Auto-Ordnance Les Baer Colt Kimber Nighthawk Custom Olympic Arms Para-Ordnance Full-Size/Single-Stack Safari Arms Sig Sauer Smith & Wesson Springfield Armory Taurus Dan Wesson Wilson and most other 1911’s with grip screws measuring 3-1/16″ apart.