Long video, Thaddeus, but I watched it.
Not sure what it means, but when I pull the trigger on my P320 the slide does not move rearwards like the one in the video does.
There is similar play between slide and grip module on my P320 as shown in the video.
It means a few things to me:
1. The P320's striker safety block design isn't reliable enough for prime time. It simply doesn't work as well as the much simpler, more positive Glock style striker safety block used on virtually all other striker fired handguns except the P320.
2. While most samples of the P320 are probably just fine, the design seems to be very intolerant of parts that aren't perfect, and if Sig is outsourcing parts to countries and companies making substandard or slightly out of spec parts, a tolerance stack-up can exist rendering the gun unsafe.
3. Obviously, Sig needs to revisit their acceptable tolerance limits on parts, step up their QC, and hold their parts suppliers to a much higher standard.
4. Though individual samples of the P320 may run flawlessly, nevertheless that doesn't mean there isn't significant unsafe design flaws. The gun started life as a striker fired alteration of the P250 to expedite product release rather than starting from a clean sheet and using proven striker fired mechanical concepts.
5. No gun should ever be as "touchy" as the sample shown in the video! Ever! No excuses for that getting out to the marketplace.
6. It's not hard to envision a gun with the issues shown in that video going off in a holster, getting bumped, etc.
7. Sig steadfastly refuses to take responsibility for their design mistakes. They should have pulled the gun off the market and reintroduced an entirely different gun based on lessons learned than to continue lying and obfuscating the truth. The fact they didn't lead to people getting hurt and killed.