Crimson Trace Semi-Automatic Lasergrip - for Glock .17L/.22/.24/.31/.34/.35/.37 Rear Activation SPECIFICATIONS BRAND: CRIMSON TRACE DESCRIPTION Designed to have precise windage and elevation calibration, the Crimson Trace Semi-Automatic Lasergrip has up to a 30-foot range even in broad daylight. It features Enhanced Visibility Optics that make sure the laser is always putting out the highest in output. This high-quality optics accessory has a battery shelf life of 5 years, and it is designed to be energy efficient. You can shoot instinctively, as no additional steps are required to get the lasergrip in active mode. It is durable and reliable and has accurate sighting at all times.