Crimson Trace LaserGuard S&W Shield Red Laser Sights are easy to install and they activate instinctively when you grip your firearm. Crimson Trace designed these sleek, low profile Green Laser Sights to fit seamlessly on your Smith & Wesson Shield so it remains easy to draw. The durable CrimsonTrace Laser Guard Instinctive Activation S&W Shield Red Laser Sight installs under the barrel and stands up to heavy recoil so it will be there when you need it. Acquire your target quickly and stay secure when you customize with the Crimson Trace LaserGuard Integrated Red Laser Sight for Smith & Wesson Shield.