Crimson Trace LG-443 Laserguard Laser Sight for GLOCK 42 & GLOCK 43

BRIGHTNESS: Features a 5mW peak, 620-670nm, Class 3R visible red laser - the brightest beam allowed by law INSTINCTIVE ACTIVATION: Front activation button engages the laser immediately when the firearm is held in a normal firing grip - This is the feature that sets Crimson Trace apart from the rest RUNTIME: Over 4 hours of battery life powered by one 1/3N Battery (included) EASY INSTALLATION: User installed- no gunsmithing required. Factory sighted at 50 feet, but is fully user adjustable for Windage and Elevation with provided tool FITS: Glock 42 & Glock 43 Looks and appears new, unused, and in excellent condition. Battery has been inserted and laser works.