M4A1 GEN8 "HULK UPGRADE" FULL METAL GEARS, AMAZING SHS PISTON, UPGRADED 460 MOTOR, O/S ORING gel ball gun blaster : BEAST UPGRADE

Updated July 2021 with yellow CHIHAI MOTKR

NOW WITH FULL METAL RAILED SHS PISTON

So you want to spoil your M4A1 GEN 8 and give it some grunt and at the same time keep it tight and tough! We can help with the "HULK" upgrade pack. Say goodbye to what you've been used to and move onto a whole new level. 

You may also need BEARINGS and SHIM KIT to install these parts properly

1. Upgraded 460 motor BLUE/SILVER (just drop her right in no mods needed)
2. Metal gear set
3. New SHS piston (SUPER QUITE)  FULL METAL RAIL 
4. New enhanced o'ring to top it all off

YOU ARE BUYING:
# M4A1 GEN8 JinMing Full Metal Gears, 460 Upgraded motor and Upgraded Plunger Set code name "HULK"

*These mods i would classify as easy to medium difficulty