Simon over at MadBull has mailed in an update regarding their KX3:
Gents,
Here are some tips. You can modify your KX3 to adjust volume and make metal punching sound.
We already add this instruction (attached) onto our website.
Also, we will have more color of KX3. Instead of using “painting,” we use “anodizing.” We will have Multicam (authorized), Tan, Dark OD, and Light Gold very soon.
Best Regards, (Mad Bull Airsoft)