The TAG FBG-6 sound grenade is available at Strike Planet and they give their take on this product made to look like a flash bang... "Pyrotechnics from the Russian company Tag Innovation firmly occupies a leading position in the Russian and international markets.
A favourite of Milsim players are the TAGInn AFG-6 Flash Bang & FBG-6 Grenade which are great to use for Milsim events as long as the locations allow for the use of pyros. Airsoft & Milsim News Blog (AMNB) goes over these to tell us a bit more of these pyros for airsoft use... "Every player should add some TAGInn stuff to his kit at some day. At least those of you playing MilSim scenarios a lot will get the benefit out of it. This time, we´re looking at the TAGInn AFG-6 and FBG-6 Grenade."
Airsoftjunkiez got the new TAGinn FBG-6 pyro grenade with a 2-second delay in stock and they demo it together with the 3 1/2 second-delay version... "The grenade will not detonate if you just pull out the pin, but 2.0S second after you will release the safety lever (happens when you throwing grenade).