JM Gen12 AK74u Hop Up 3D Printed

This 3d printed adjustable hop up is for jm j12 gen12 ak74u gel blaster.

Improve the shooting range and accuracy.

Specifications:

Brand: DK.

Material: 3d printing pla.

Color: black.

Outer dia: 19mm.

Package includes: 1x jm gen12 gel blaster hop up.