If price is truly not a concern than Brugger-Thomet is the company to go with.
We have a guy who has the H&K and this
is the suppressor that he ended up with after trying the one recommened by H&K out of the box ( their own ) and one from a US source, but it was not AAC, but AWC.
The Brugger is a very nice, very expensive suppressor and you can expect a long wait period to get it imported, but it runs like a champ.
Please post pics of what you go with.