I've just received from Hejnar Photo an 'L' bracket for my D600.
First up, it is not a dedicated bracket for the D600 as it is imprinted 'D300'.
Secondly, when the bracket is positioned away from the camera to allow access to the ports, it is prone to twisting as the flange does not line up any more.
And lastly, even with the bracket at it's maximum off-set position, it doesn't allow clear access to the cable release port. That means I can't plug in my Nikon MC-DC2 cable release.
Not happy, Jan !! I'm returning it.
I'll now be patient and wait till RRS release their 'L' bracket for the MB-D14 grip.