Fix meter coupler on Non-AI Nikkor lens

I have a F2, which needs the metering coupler foot on the outside of the lens. One one of my lenses, the coupler lost a screw. Its been some time since I needed to get it repaired, so I may have lost the coupler foot as well. Anyone know of a good place to buy them? Or should I just look for a broken non-ai lens?

the busted lens, or even an un-busted non-nikon lens is your best bet, but if you ask nicely and pay 50 cents or something like that nikon will send you one, but i bet any repair shop can set u up.