New JM J9 Original Gearbox with Blowback

This jm gen9 gearbox is compatible with Jinming  J9 gel blaster toy gun.

New jm gen9 v2 version gearbox with blowback feature and use xt30 plug.

Specifications:

material: Nylon

Color: black

Plug type: xt30

Weight: 230g

Package includes: 1x jm gen9 gearbox ( without the motor )