HK seems to be really slow about producing guns lately. I'm not sure why. Maybe it's because it's election year. Maybe it's because demand for them has increased.
Keep looking and I'm sure you'll find one. The USP 45C is one of my personal favorites and is the my compact back up to my HK45.
It's a great gun for sure. Check Top Gun Supply from time to time. They have good prices when they have them and are great people to deal with.
When we do hit it we hit it out of the park and send it over to China as quickly as possible to cheapen it and sell it.