What's with the P320?

[Kleanbore]

Like the M8, which I have, I believe the 320 can be had with a manual safety. Most Glock-like striker-fired pistols are "essentially cocked and locked SA guns"

No, no, no.

The Glock is one in which the trigger further compresses the partially compressed striker spring. The P320 differs in that regard.

 

[rust collector]

All have made their positions clear. The matter will not be put to rest until all evidence is considered and the courts issue their rulings.

Meanwhile, mechanical devices do fail. Use a safety if your gun has one, and use the redundancy of the four rules as best you can.