Machined to fit seamlessly while bringing both artistry and rugged engineering to John Browning&';s classic 1911 design, Green Master Series Lasergrips are sure to impress. Featuring ergonomic and aggressively durable G10 side panels with a rubber overmolded activation button; these are the ultimate laser sights. Standard to Crimson Trace Lasergrips, the LG-904G features Instinctive Activation. This means that the laser sight automatically springs to life when the weapon is held in a natural firing grip. Lasergrips are fully compatible with ambidextrous safeties. *Fits 1911 and 1911A1 Full-Size Frames Including: Auto-Ordnance, Les Baer, Colt, Kimber, Nighthawk Custom, Olympic Arms, Para-Ordnance Dull-Size/Single-Stack, Safari Arms, Sig Sauer, Smith & Wesson, Springfield Armory, Taurus, Dan Wesson and most other 1911&';s with grip screws measuring 3 1/16" apart.