Manga G Tachikawa Classic Fountain Pen, use any ink, even India ink, slip nibs and feeds in and out

The Ackerman Pens Manga G Tachikawa Classic Fountain Pen is a unique and versatile pen that allows users to use any ink, including India ink. The pen features slip nibs and feeds that can be easily removed and replaced, giving users the option to change to multiple other nib types. However, there are a few issues with this pen. Some customers found that they needed to tinker with it a bit in order to get the best performance. Additionally, the pen cannot fit any current fountain pen cartridge system on the market, and the cartridge that comes with it may leak. Customers recommend using silicone grease to prevent leakage. Despite these issues, many customers found the pen to be a great purchase. It is described as decently balanced and the ability to easily replace nibs is praised as a fantastic feature. However, some users reported that the ink flow is uncontrolled, with ink forming beads and sometimes spilling onto the paper. Customers also had some minor complaints about the product. One customer mentioned that there was no indication as to which pen was which when purchasing multiple pens. Another customer expressed disappointment in the lack of directions and pen point included with the pen. Overall, the Ackerman Pens Manga G Tachikawa Classic Fountain Pen offers a unique and customizable writing experience, but may require some tinkering to achieve optimal performance. It is recommended for those who enjoy experimenting with different inks and nibs.