RedWolf Airsoft announce that they have the AVATAR LED Light Switch that you can use with the AVATAR airsoft grenade. This allows owners to find their reusable AVATAR grenades, especially in the dark. There are different colours to choose from... "The AVATAR LED Switch Kit is a replacement switch for all Avatar Grenades out in the market. As you switch it on, the LED light will glow a bright coloured light  making it much easier to see in the dark.

Uses 1 CR123 battery which is NOT included in the package."