Lee 1234The Atlas/Kato HO gp7 has the walkway as part of the frame. The protos have plastic walkways that are part of the body. So you would need a walkway with the older atlas shell. The newest Atlas has a plastic walkway.
Sorry I forgot to put it in the post but this is N. Does that make a difference?
This is mine:
This is the Atlas frame:
Lee
It's technically a GP9R but they're based on the same frame.
I understand it's not ideal but Walthers is out of parts and I don't have any other options. But I also don't want to waste money on something that won't work.