You can double the volume of ink or paint stored in the pen by removing the reservoir and filling the body. The reservoir provides a double wall of guaranteed protection, which might be what you want, but it does reduce your carrying capacity.
Other nibs you can use in this pen
Slip in Tachikawa Manga G nibs and Leonardt Principal nibs
Insert our large nib feed to use the Zebra Manga G nib, Brause Rose, our Sketch nibs, and several Hunt nibs including the 22B, 56, and 101
Insert one of our adapters to draw or write with crowquills and Gillott 303 nibs
Wash Your Drawings
You can attach our Brush Tool to wash your drawings with water or dilute ink as well as paint with watercolors.