For shooters of microcompact pistols with under rail to mount accessories, Surefire designed a weaponlight to fit and it's the XSC... "Have No Excuses. The mean streets are no place to be making excuses about your protective equipment. If you carry one of the popular higher-capacity micro-compacts from SIG SAUER or Springfield Armory, or the GLOCK Slimline Series, we’ve engineered the SureFire XSC specifically for you.