kfconcept
There are two types of FD mounts
FD/FL Breech-Mount (with a silver ring, you need to rotate the silver ring when attachment and removal), breech-lock mounts are identified by the silver ring
New-FD Bayonet Mount, bayonet mounts are identified by a red dot next to the lens release button
Here are the steps to install breech-mount version
Operating the adapter
Fujifilm X Mount Compatible Lenses Nikkormat El Lens Mount Nikkormat Ftn Lens Mount Fujifilm Lens Ring Mount Lens Mount Ring Piece Nikkormat Ft Lens Mount Nikkormat Ft2 Lens Mount Nikkormat Lens Mount Fix Nikon F Mount Lens Nikkormat Ftn Nikon Nikkormat Camera Lens Mount
Nikon Non Ai To Ai Adapter Canon Ef-m Ef Adapter Nikon 1 Mount Compatibility Zenit Lens Adapter For Canon Computar 8mm C Mount Lens E Mount Lens Bundle Sigma Sd Quattro Lens Mount Adapter Nikon F Nex T2 Adapter Nikon F Sony Camera Hdmi Adapter