MP5 works on stock, locks when upgraded
Hi my ICS Mp5 refuses to fire when I have these upgrades installed.
I tried to upgrade with these first
- m110 spring
- Modify Bearing Spring Guide - V2
It didn't fire, reinstalled my stock parts and it started firing again.
then I figured these upgrades might help it fire.
- Modify Gearset 6mm V2/V3 - High Torque
- Systema Magnum Motor - Long
- MASK Aluminum Piston Head
It didnt fire.
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