Crimson Trace LG-492 Laserguard Red Laser Sight for Sig Sauer P238 and P938 Pistols Multiple Materials Made in USA POWERFUL RED LASER: Features a 5mW peak, 620-670nm, Class 3R visible red laser - the brighest 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. OVER FOUR HOURS OF BATTERY LIFE: Powered by one 1/3N Battery (included). This product is eligible for Crimson Traces Free Batteries For Life Program. FITS Sig Sauer P238 / P938 - Does NOT fit P938 BRG, P238 DESERT, P938 22LR TB EASY INSTALLATION: User installed- no gunsmithing required. Factory sighted at 50 feet, but is fully user adjustable for Windage and Elevation with provided tool. Instinctive activation and fully adjustable for windage and elevation Manufactured to fit seamlessly with the firearm frame No gunsmithing or frame modifications required for installation Hard Polymer, Rubber overmolded front activation Class IIIR Laser Product: &lt;5mW power output