Nikon FE battery holder replacement

Anyone know where to find the black piece holding the batteries behind the battery cap? Just bought another Nikon FE and it is missing that piece. Wanna see if there is any alternatives besides eBay.

I don't know, but sometimes it comes loose from the metal cap and is still inside the battery compartment, so it does not hurt to poke your finger in and see if it's still in there. If not, wrapping tape around the sides of the batteries will probably work as a stopgap - the black piece just keeps the batteries together and centered.