Most 'retro'-style BCGs, whether they're 601 knock-offs like cheap clones, or others, almost always use both phosphated extractors and ejectors; some of the more high-quality imitations, like Brownells' reproduction, uses a hard-chromed extractor but still a phosphated ejector, presumably because of cost & scale in production on behalf of their suppliers.

This all said, is there any place to buy a standalone hard-chromed (or Nib-X coated) ejector? Already have a hard-chromed bolt I'd like to use it on, but am just looking for the standalone ejector. Hoping for pointers!