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
Leica M Adapter L Silver Leica Cl L Mount Leica Cl M Mount Nikon F Mount 50mm Lens Leica Cl M Adapter Leica Cl Battery Adapter Leica Cl Lens Adapter Leica Cl M Lens Adapter Leica Cl R Lens Adapter Leica Cl With M Mount Lens
Wp8190232 Whirlpool Light Lens And Filter Ef Mount Telephoto Lens Nikon Camera Lens Mount Repair Used A Mount 16x105 Lens Nikon Dslr Slide Adapter Metabones Adapter Sony A7 Iii Sony La Ea1 Nex Adapter Sony 18-55mm F2.8 Aps-c E-mount Sony A772 A Mount Sony Fullframe A-mount Zoom Lenses