Everybody claims the "ultimate" something now a days it seems. It is a video that says a lot without telling you much at all except they changed everything. I don't even know what caliber it is.
A lower muzzle flash for night shooting...I hope my gun Flares off like a Refinery when I pull the trigger. You know, psychological warfare kind of thing.
A few hollow points in the chest would be enough psychological warfare, I think. Peraonally, I'd think being able to see after firing would be very helpful.