JM J9 J16 Gearboxes Blowback Parts

a blowback kit for jinming new gen9 m4 and gen16 hk416d gel blasters.

Specifications:

Brand: jin ming.
Material: nylon.
Color: black.
Compatibility: jm j9 v2 & j16 gearboxes.
Package includes: 1* jm gen9 gen16 blowback kit.