.50 cal Bullet Pen | Hidden Pen with Cap

This pen is a 1:1 full size replica of the iconic .50 cal round. The cap seamlessly hides the pen, so it looks like a bullet until the cap is removed.

All you have to do to assemble the pen is to remove the tip/ink from a pen, such as a Bic pen, and then insert it into the tip of the printed bullet pen.

Pen Ink Options

You've got 3 options for the ink:

1. Pilot G2 Print Profile

   1. Pilot G2 (Amazon Link)

   2. Schmidt Rollerball (Amazon Link)

2. Bic Print Profile

   1. Bic Cristal (Amazon Link)

Filaments used

• GiantArm Silk Gold (Amazon link)
• Sunlu Silk Red Copper (Amazon link)

Assembly takes seconds

If using the Pilot G2 version – is your ink missing the cap? 

If your ink is missing the little black plug/cap at the bottom (see image below), then you may find the ink to be a tiny bit loose in the 3D printed pen.  I have included a print profile on this model called “Optional Ink Cap for Pilot G2” that you can print and use if your ink cap is lost or missing.  This way your ink will fit nice and snug in the 3D printed pen.