Is the LC9s/pro a SA/DA, or a DA ?
mb
Good question, but the answer is none of the above. It's a pre-set striker, thus the LC9s. The LC9 is a pre-set hybrid in the sense that once it is preset, it acts like a DAO, like the new hammer less revolvers.
Pre-set strikers and hammers apply only to semi-automatic handguns. Upon firing a cartridge or loading the chamber, the hammer or striker will rest in a partially cocked position.
The trigger serves the function of completing the cocking cycle and then releasing the striker or hammer. While technically two actions, it differs from a double-action trigger in that the trigger is not capable of fully cocking the striker or hammer.
It differs from single-action in that if the striker or hammer were to release, it would generally not be capable of igniting the primer.
Speaking of which, I'm inclined to give FNH's new striker fired entry into the compact market a try the FNS9c. Having the FNX .45 and the full sized FNS9 and being quite pleased with both, I'm contemplating either the 9 or the .40.
In the post script, I would be remiss if I didn't mention that I can shoot 6" groups at 20 yards with my LC9 just fine. It's a great deep conceal pistol. Improvements have been made in the market for sure, but I'm not planning to put the little monster out to pasture just yet.