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
Nikon F Bayonet Mount Lenses Nikon F Bayonet Mount Cameras F Lens Mount Female Fastest Focusing E Mount Lens Nikon Lens Mount Replacement Female Nikon Bayonet Mount Lenses Nikon F Bayonet Mount Vs F Mount Nikon K3 Female Bayonet F-mount Sony E Mount F.95 Sony E Mount F.98
Hoya 58mm Uv Lens Filter S Mount Macro Lens Nikon D7100 Wireless Adapter D5200 Canon Lens Adapter 70x200 F Mount Lens D Mount Lens On Gh4 Tamron 100-400 Nikon Mount Diy Shift Adapter Sony Nex M43 To Sony Nex Adapter Sony Alpha E-mount 10-18mm