The Crimson Trace LG-459G Laserguard is a powerful green laser sight for Smith & Wesson M&P 9EZ” M&P 380EZ and M&P 22 Compact pistols. The LG-459G is quickly and easily user-installed in moments and offers a front activation button powered by Crimson Trace’s Instinctive Activation technology. The laser sight will provide two (2) hours of battery life with a single 1/3N Lithium battery (included). As with all Crimson Trace laser sights” the LG-459G is completely user-adjustable for windage and elevation.