I can remember giving a demo on Lulworth Ranges to the Sqn, Sgt Bevan was the cmdr I was the gnr. we also did a canister demo at the same time. Ther was/are 2 types of granade, 1 very similar in operation to the hand held smake grenade and 1 phospherous whish burst milliseconds after leaving the launch tube, very dangerous these ones you have to be closed down to fire them and they can be surceptable to certain radio freqs.