Whats ur thoughts on the 320 having no trigger or external safety (not m17 version)?. At least glocks have the bladed trigger. That was 1 additional reason why i stayed away from the 320.
What does the bladed trigger safety accomplish? Anything that pulls the trigger (finger, jacket drawstring, etc.) will deactivate that trigger safety. The only thing it can really prevent is a discharge caused by dropping.
Sig had a problem with the P320 in that area. The weight of the trigger was sufficient that when dropped at an angle, the trigger could be forced to move to the rear and discharge the weapon. The reason this was not caught before distribution is the drop-test standards all have the gun dropped straight down. But, when the gun was dropped closer to the slide, the trigger was more likely to activate.
I sent mine into Sig, and they repaired the trigger for free. Not sure what all they swapped out, but I know that before the repair, the trigger didn't click when pulled without the striker in the charged position (slide hasn't been racked). Now, the trigger makes a definite click sound each time it's pulled without the striker being released. I know the replaced the trigger itself, because it's now thinner and weighs less. That keeps it from being pushed to the rear by inertia when dropped at that "bad" angle.
Since the "voluntary upgrade" program began, I've not seen any more reports of drop-related discharges. There were only a few reported that initiated the upgrade. Since Sig maintained that the gun met required drop-safety testing standards, they didn't label it a "recall".
I've never seen a need for a manual safety on a Glock. Same for a P320. If you don't want to carry in condition 0, then simply don't have a round chambered. Time to remember to take the safety off vs. time to rack the slide. Seems like a wash to me.
There's a school of thought that says you should not trust a manual safety to protect against discharge. Mechanical devices fail, people forget to set them to "safe" and they can accidentally be disengaged. Better to treat the gun as ready to fire than depend on a safety and treat it as "safe".