Inside the waist band (IWB) or outside on the belt (OWB)?
There are many good brands but it is kind of a personal choice.
Most good to very good brands will have anywhere from 2 weeks up to 6 months wait.
Some brands to check out are
there are many others. You may wish to do a web search for USP .45 compact holsters.
Hope this helps some.
May also wish to go to H&K forum and web search for H&K sites to help in your search.
Have a nice day!