Based on the experiences from 9LV MK2. 5 starting around 1985 .
9LV MK2. 5 is a major redesign of 9LV was performed for 9LV Mk3 .
Based on the experiences from 9LV MK2. 5 , a major redesign of 9LV was performed for 9LV Mk3 , starting around 1985 .