JM J11 J12 Gearbox Blowback Parts

a blowback kit for jinming gen11 ak and gen12 ak74u gel blasters.

Specifications:

Brand: jin ming.
Material: nylon.
Color: black.
Compatibility: jm j11 j12 gearboxes.
Package includes: 1* jm gen11 gen12 blowback kit.