Weapons with [SUSTAINED HITS X] in their profile are known as Sustained Hits weapons. Each time an attack is made with such a weapon, if a Critical Hit is rolled, that attack scores a number of additional hits on the target as denoted by ‘x’
12"
1
2+
16
-4
D6+2
Sustained Hits D3
Melee
6
-
12
8
-2
2