Tactical Scorpion Gear TSG-WLS104G Green Laser Sight with Power Indicator Fits: Glock 17/19 (Gen 3-5), Glock 22/23/31/32 Gen 3-4 & Glock 19X/44/45. Custom Laser Light for Pistol: Compatible for Glock 17/19 Gen 3-5, Glock 23/31/32 Gen 3-4 and Glock 19X/44/45 - Incompatible with Glock 22/23/31/32 Gen 5. Compact and lightweight, it integrates into the trigger guard perfectly for better shooting performance and daily carry. Quality Trigger Guard Laser: Constructed with durable and impact-resistant polymer. Class IIIa Laser, output less than 5mW peak, wavelength 510-530nm, green laser visible at 50 feet distance (Does not exceed Class IIIa emission limits). Battery Indicator and Power Efficiency: It is the first laser to include power indicator to help you always get ready for tactical events and protection. 2 x CR1/3N batteries run for 160 minutes. The indicator shows Green when the battery level is at 70%-100%, Blue at 20%-70%, Red at 0-20%. Stable Construction and Easy Operation: Securely attaches to both the trigger guard and the pistol rail, it keeps the laser more stable after each use. Ambidextrous tap on/off switch to improve aiming speed and operate easily for both right and left-handed shooters. Adjustable Laser Beam for Enhanced Accuracy: This trigger laser can be easily re-calibrated to suit specific tactical needs, providing added flexibility and improved shooting precision. Easy Installation and Operation. Quick and easy installation: remove 3 allen screws on the right side plate of the laser, align the main laser body onto the rail and fore end of the trigger guard, and install the right side plate and tighten the 3 allen screws. Ambidextrous Buttons: on/off switches on both sides and it works perfectly for both right-handed and left-handed users. Convenient Battery Replacement: Batteries can be easily replaced while the light remains mounted on gun.