Best shockmount for AKG c522eng?

[Derp1]

H30's seem impossible to find.

[Boomoperator]

Look at the Rycote INV 7, a good choice for a front-heavy microphone - which that c522 seems to be:
https://mymic.rycote.com/products/shock-mounts-suspension/invision-broadcast-film/invision-inv-7hg-mkiii/

[voltronic]

Look at the Rycote INV 7, a good choice for a front-heavy microphone - which that c522 seems to be:
https://mymic.rycote.com/products/shock-mounts-suspension/invision-broadcast-film/invision-inv-7hg-mkiii/

I agree that the standard INV-7 with individual Lyres could work, but you linked the INV-7 HG mkIII which has a Duo-Lyre, and the cradle of that mount may have issues with the tapered body.

Rycote recommends the USM-L for this mic.
https://mymic.rycote.com/devices/c-522-eng/