The Surefire XC1-B Ultra-Compact LED Handgun Light is the compact weaponlight we are eyeing for our gas blowback pistols... "SureFire’s smallest and lightest weight weaponlight has been upgraded to deliver more output and feature even more ergonomic switching. The new XC1-B was specially developed to equip compact railed handguns with a source of tactical white light, essential for concealed-carry and other applications.