Crimson Trace Green Laserguard for HK VP9 / VP9SK / VP40 Pistols #LG-499G. Instant laser alignment with instinctive activation-the LG-499G green Laserguard mounts securely to HK VP9/VP9SK/VP40 with no modifications. 5mW green laser with windage/elevation adjustability and a master on/off switch for full control. Green laser (515-532nm, 5? MW) for better visibility, especially in daylight. Fits Heckler & Koch VP9, VP9SK, and VP40 pistols, no permanent modification needed. Instinctive Activation: laser turns on when you grip the gun, with front activation switch. Fully adjustable windage & elevation for accurate alignment. Master On/Off switch allows disabling laser when desired. Polymer construction for lightweight strength. Comes with battery and tool for adjustments. Model / SKU: LG-499G (01-6590-1). Activation: Instinctive Grip + Front Button. Firearm Fit: HK VP9 / VP9SK / VP40. Adjustment: Windage & Elevation. Battery Life: 2 hours.