310+ fps UPGRADED #NYLON# GEARBOX "STAGE 5.0" (FULLY UPGRADED) GEN 9,10 + GRIP JINMING M4A1

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  • $279.00
  • Regular price $299.00


On special for a limited time

THIS IS NOW A NEW VERSION NYLON GEARBOX 2021..YES!!

These are built from the ground up, purely from parts and are always built to order so they are as good as it gets. We spare nothing.

#### CHIHAI RARE EARTH VERSION WITH SPECIAL CYLINDER ###


DROP IN FOR Jinming M4A1 GEN 9, ACR GEN 10 (COMES WITH NEW GRIP AS WELL FOR GEN9) (PLEASE SPECIFIY WHAT MODEL YOU HAVE)

METAL HARDENED GEARS, ALLOY CYLINDER HEAD AND ALLOY NOZZLE, FULL METAL RAILED PISTON AND ALLOY PISTON HEAD, UPGRADED RETURN SPRING, PERFECTLY MATCHED UPGRADED MAIN SPRING 

GUARANTEED 310+ FPS (USUALLY AROUND 320-330FPS) ...IT WONT LEAVE HERE UNTIL IT SCORES OVER 310 FPS ON OUR CHRONO 

NOW WITH special cylinder and BLUE SHS full metal rail piston and alloy head (way smoother operation and less stress on gearbox and increase performance)

THIS IS A COMPLETE PACKAGE READY TO USE AND SPORTS THE "WOW FACTOR" BEAST SEAL OF APPROVAL

COMES WITH M4A1 GEN9 WIRING LOOM AND BARREL

Brand new GEN9 , 10 GEARBOX + MUTLI UPGRADE PACK (2 x UPGRADE PACKS) + FULL INSTALLATION AND TESTING OF BOTH UPGRADES PRIOR TO SENDING

PERFECT FPS RANGE: 310+

HIGH RPS! (BLUE RARE EARTH MOTOR)

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# UPGRADE PACK 1 (1.3mm SPRING, ADC BEAST hopup, ALLOY BARREL 33.5cm ,T-PIECE(GENUINE))

# HULK UPGRADE PACK (UPGRADED ##RARE EARTH##460 LONG MOTOR, FULL METAL GEAR SET, UPGRADED PISTON + O'RING)

# SPECIAL ALLOY CYLINDER HEAD + ALLOY NOZZLE

# SPECIAL CYLINDER

# STAINLESS STEEL RETURN SPRING

# BEARINGS X 6

# SHIM KIT X 1

# FULLY INSTALLED, TUNED AND TESTED TO BE A BEAST BY BEAST TECHNICIANS



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Please take extra care to read the supplied instructions YOU MUST NOT TAKE OUT THE ADJUSTMENT SCREW FOR MOTOR as we have adjusted it already (just remove the 2 little screws holding the motor mount plate) ....if it's not done correctly the beval and pinion gear will strip and that will mean it's not been adjusted correctly. Getting it right is super easy so what are you waiting for 😁

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