User blog comment:Mckrongs/Monster Hunter Frontier Season Forward 4/@comment-4212769-20120511081613

New Bow Gun ammo revealed:

http://www.youtube.com/watch?v=HQR70N8q5X8&feature=player_embedded

Seems to be a Lava erupting shot.

In the Forward 4 preview new armors/weapons including the Kuarusepusu armor and weapons.