LRB M3/93 is a smoke type grenade with CN chemical agent mixed with smoke filler.
The fuze of the grenade is not detonating type, the igniter fires a black powder pellet in the grenade.
The flame of the black powder ignites smoke filling mixed with CN chemical agent.
The grenade body has four holes on its upper part for emission of the irritant CN gas after it's activation.
Body of the grenade is made of aluminium.