CRIMSON TRACE 01-3000173 GREEN LASER SIGHT FOR S&W SMITH AND WESSON LG-CSX. Laserguard is the trusted household name for comprehensive laser sighting systems. Featuring the Crimson Trace patented Instinctive Activation technology, the laser turns on when you naturally grip your pistol; no need for manual ON/OFF buttons. Each Laserguard is designed to look like it is part of the firearms. Laserguards mount quickly and securely around the pistol’s trigger guard, enhancing your ability to engage threats quickly and accurately. FITS SMITH & WESSON® CSX.