Camera strap carabiner
thingiverse
These carabiners allow you to quickly remove and attach your camera's shoulder strap. Not as quickly that i would call it "Quick release", but still pretty quickly.
Download Model from thingiverse
With this file you will be able to print Camera strap carabiner with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Camera strap carabiner.