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
All three Japanese Manga G nibs
Leonardt Principal nibs
Brause Rose nibs
Our Super Sketch nibs
Hunt drawing 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.