[QUOTE=petersonra;1975648]why don't you ask them?

My guess is that it would be covered under option 7 in 250.8



Listed assemblies can include assemblies that are field assembled. In any case, the code does not require ground screws to be listed, or terminal bars for that matter.[/QUOTE]

There is no way that I will ever see a field installed ground clip as being part of a listed assembly. It is my opinion that a the grounding clips are covered under list item 8 in 250.8.
The following is from UL.

Because components are only intended for installation in end products whose safety is evaluated by UL separately, they may be incomplete in construction or restricted in

performance capabilities. This factor precludes their safe installation by electricians or contractors in the field.