This futuristic looking bow papercraft is weirdly named the Chalice Arrow (a bow named as an arrow?), is a weapon used by Kamen Rider Chalice. These are all based on Kamen Rider Blade(2004-2005) tv series. The Chalice Arrow fires out laser bolts in its projectile mode and can also be used as a melee weapon.
Kamen Rider Blade - Chalice Arrow Papercraft [mediafire]