Weapon level unlock:
a) EOTech Sight-Level 2
Temporary lack of graph
b) Fore Grip-Level 3
Grip-grip to improve weapon accuracy
c) FMJ-Level 4
FMJ-all-metal warhead
d) Reflex Sight-Level 5
Reflex Scope-red-dot sight
e) Quickdraw-Level 6
Quickdraw-aim quickly
f) Target Finder-Level 7
Target Finder-Enemies that can be found in sight will be displayed when aiming.
g) Adjustable Stock-Level 8
Adjustable Stock-foldable stock, with constant moving speed in ADS state.
h) ACOG Sight-Level 9
ACOG-advanced optical sight
i) Laser Sight-Level 10
Laser Sight-laser aiming
j) Suppressor-Level 11
Suppresser-silencer
k) Variable Zoom-Level 12
Temporary lack of graph
l) Extended Clip-Level 13
Extended Clip-large magazine
m) Hybrid Optic-Level 14
Hybrid optical-hybrid sight, which can switch X1 and X4. Double-click the right button to switch quickly.
n) Rapid Fire-Level 15
Rapid Fire-firing rate
o) Dual Band-Level 16
Dual Band-thermal imaging sight
For more relevant information, please pay attention to: diablo 3 topic.