>>11012116Correct, but the term "plasma jet" is still in heavy use today and is the term most laymen know, so it's the one I use.
Concussion grenades do not use shrapnel to inflict damage; instead, only the blast effects from the explosion are used to harm the enemy. The grenade is ALWAYS filled with a high explosive (whereas some frag grenades still use low explosives like black powder), and the body is generally made of thin aluminum, heavy cardboard, or fiberglass, depending on manufacturer.
Outdoors, a concussion or blast grenade has very limited range, making them "safe" for the user to toss around while not hiding behind something, but indoors the blast effect is intensified such that a concussion grenade can be more effective in an enclosed space than a frag grenade. If you're dropping a grenade into the open hatch of a tank or through the window of a bunker, go for a concussion grenade instead of the frag.