F2 cocking knobs, new or great shape, not quick pull pins.

F2 cocking knobs, great or new shape, one included, multiples available.
Fits under F-4 Illustrator Top cocking rail, not a quick pull pin. I think to remove this pull pin you have to unscrew the back cap of the F4 and use it to pull this pin out through a hole in the top cocking slot.