The Crimson Trace LG-499 Green Laserguard is an advanced laser sight tailored for the Heckler & Koch VP series pistols including the VP9 VP9SK and VP40. This precision device emits a bright green laser with a wavelength of 532nm providing a clear and visible point of aim. It's designed with a pressure pad power switch for instinctive activation which means the laser engages naturally with a standard firing grip. Easy to install without the need for firearm modification it comes pre-sighted at 50 feet but allows for easy adjustments of windage and elevation. Weighing just 1.60 oz it mounts seamlessly on the trigger guard and includes a master on/off switch to conserve battery when not in use.