M4A1 GEN9 GEN 9 NYLON GEARBOX WITH NYLON GEARS UPGRADE FOR GEL BALL GUN BLASTER JINMING

FULLY ASSEMBLED DROP IN GEARBOX (YOU CAN USE ORIGINAL OR UPGRADED MOTORS)

NYLON GEARSET INSTALLED (LOW NOISE)

GEN9 ORIGINAL WIRING

Suitable for JM Gen9 / LDT416 / TTM / 556

High durability

You will get:

1 x M4A1 GEN9 GEN 9 NYLON GEARBOX WITH NYLON GEARS (no motor)

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