The filter pack I listed simply slips over the lens of any P3 camera. You don't need to remove the factory lens cover on the P3-Advanced/Pro. It likely has to be removed for a lens cover/gimbal clamp to be used but as it just slips on removing it after flight shouldn't be much of an issue.
@Travis726
@Dirty Bird Quick question about the ND filter pack - do you know if the 3d printed gimbal lock/ lense cover will fit over the aftermarket ND filter set you posted? It looks legit otherwise.