***EDIT***. The nib is in a nib unit like the 492. The collar of my nib unit is stuck up in the section and I can't get it out. So for now, mine functions as a friction feed! I somehow got my PenBBS 355 fountain pen in just a week. I go over the "syringe filler" style of filling system and how this pen is improved over the original PenBBS 355.