The DB9 (and 380) are DOA only striker systems. They are not preloaded, like a Glock and others, making them very safe to carry. However, because of that, each trigger pull is as long as the last, much like a DAO revolver. I believe this would be considered a "passive" system, which renders the firearm as safe as possible, with no chance of accidental discharges from dropping, or just a slight trigger pull.
If your trigger feels a little mushy, or slow to fully reset, the trigger return springs that Galloway sold had a slightly wider diameter wire to make them a bit stiffer which helped the trigger feel more positive. .024" to be precise. How do I know? I used to make those return springs for them. I had to get out of the winding business due to health issues, but could make the occasional pair of springs for those that really need them.