SiJun SJ HK416 Gearbox

Original sj hk416 Gearbox for sj hk416c and sj hk416d gel blasters. It's with tamiya plug and metal gears.

Specifications:

Brand: Si Jun.
Version: v2.5.
Material: nylon,
Gear material: metal.
Color: black.
Plug type: tamiya plug.
Packing includes:1x sj hk416 gearbox.