Senriku

The Senriku is a rifle used by Van Augur. It is an extra long rifle with cross-hairs at the middle and the end of the rifle. The barrel end has a horn-shaped design. The name of this weapon comes from a databook, though interestingly, the end of the barrel being in a funnel shape, as seen in this picture, would render the cross-hairs useless.

Abilities
The Senriku is capable of shooting down targets at an extremely far range. With it, Augur can hit a seagull flying so far away from Jaya, his location, that the island can't be seen from the seagull's position. Also, Auger is capable of firing rapidly, as demonstrated with Portgas D. Ace as the target.