I have the now discontinued H&K Mini Auto. Its 440C blade steel with one of, if not the best acid washed, stone washed blades I have ever seen. Its got black aluminum handles and a very smooth button lock.
Its a Benchmade in every sense of the word. Its beautifully built and fires hard and fast. I know many may think to compare Smith and Wesson to these, but as far as the American made H&K knives go, they are the Benchmade quality that you would expect.