The fully licensed Cybergun SIG MCX OEM by VFC is now available in Japan and here is Hyperdouraku doing a review onn it. It is a compact AEG that has an extendable stock and flip-up sights. The handguard is KeyMod and comes with a 120-round AEG magazine. Usually, this comes with springs for quick change to meet game site requirements.
Read the full review here (in Japanese). Below is the video overview.