The Tokyo Marui AK Storm NGRS replica is currently only available in Japan, but this is about to change any day.

As you can see in the pictures and video below, the new "AK Storm" is based on AK47 but has undergone a thorough modernization. Improvements that are expected to improve functionality include a short barrel, a stock with a wide range of adjustment, including the angle of the butt plate, an M-Lok system handguard, a magwell improving magazine change, a mounting rail for optics in place of the rear sight, etc.

Take a look at the promotional video and photos.

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Source: tokyo-marui.co.jp, popularairsoft.com