An actual praise of Eagle6 Airsoft's upgrade services for anything Tokoy Marui. For those looking for third-party support for Tokyo Marui products, Eagle6 Airsoft is always the go to shop for airsoft players in Europe. If you cannot find a particular part for your Marui AEG, whether standard or new generation, you can always find it at Eagle6. Here is Airsoft_Ross on  the upgrades done to his TM HK416D NEG... "This is my Tokyo Marui Hk416D next gen on a 7.4v 1500mah lipo on 0.2s @ 347 fps.

Installed:

• Big Out DTM-N Mosfet Unit
• Firefly Hop rubber - hard
• Firefly Flat Hop Nub - soft
• Eagle6 M100
• Service
• Fixed connector at rear and installed Lonex Gears
• Installed Promy 6mm Bearings

I would reccommend Eagle6 Airsoft for any kind of Tokyo Marui upgrades! As far as I am aware they do ship internationally for upgrades and parts!"