Simple upgrade that increases the fire rate of the gel blaster by up to 50% without any major modifications. It's also a bigger battery pack which will last you all day.
Compatibility:
M4A1 V8
M4A1 V9
WELL M401
SKD AK V2
Kublai M4
AKM-47 J11
Included:
1 x BOS LI-PO 11.1V 1200MAH