C4 LED Upgrade Kit upgrades the 'original' Stinger LEDs with the more powerful C4 LED, making the light 2-3x brighter (original Stinger LED models don't have "C" or "C4" in the serial number.)
Kit includes facecap assembly, retaining ring, and C4 LED with switch assembly.
Upgrade will NOT change models with the xenon bulb to an LED, they only upgrade older LEDs to the newer super bright LEDs.
