• 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.