What I have understood by following many discussions is that the kit-less pen must have the cap , body and sections made without using kit parts, the clip could be made or used a ready made [ ie purchased from regular suppliers]. if filling mechanism is piston filler type- the pen maker makes it, but purchased converters from regular supplier is accepted. Nib and feed are of course not made by hand-these are purchased ie factory made. So primarily Kit-less is the pen in which the body is made by not using commercial kit parts. Kindly correct me if I understood wrongly.