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 D300 Lens Mount Nikon D300 Lens Mount Type Nikon D300 Mount Type Nikon D300 Wireless Adapter Cf Sd Adapter Nikon D300 Nikon D300 Memory Card Adapter T Ring T Adapter Nikon D300 Is A D300 Nikon F Dx Mount Nikon D300 F Mount Cv 12mm Sony E Mount
Ef Lens On Efs Mount Nikon D5300 Mount Type Canon W-e1 Wi-fi Adapter Live View Moment Original Iphone Lens Adapter Olympus Om-d E-m5 Mark Ii Lens Adapter 4 3 C Mount Lens E Mount 18-55mm F 3.5-5.6 Zoom Lens Telephoto Lens Vivitar T-mount Sony Pcg 61212w Adapter Sony E Mount Apsc