Look into the Walther P99C AS. It is unique in it's mechanism. You have the option of carrying with no preloaded striker and is like a double action trigger pull. After the first shot if functions with a lighter preloaded striker trigger like any other striker fired pistol. You also have the option if the striker is fully released, a slight pull on the slide will engage the striker and the trigger moves to preloaded position. In the preloaded position it also has a decocker that will release the striker to the fully disengaged position. You can have a DA/SA mode or with a slight pull on the slide a normal single action striker. It's maybe better to look for a youtube video on its operation in case my explanation is a little hard to follow.
I forgot to mention you have full double strike ability in this system in case you encounter a hard primer.
I forgot to mention you have full double strike ability in this system in case you encounter a hard primer.