This is a remix of the breakaway link ammo chain on Thingiverse. I made some modifications to the print profile to allow it to print better on the X1C. Be sure to gently snap the upper and lower sections along the perforated edge. Gentle offset pressure will separate the seam. Once all are cracked, you can pull the links free. You may need to pull the inner filament string that was left behind at the seam.