A significant part of the US population wants to be able to tool up and pose in front of the mirror looking like some Hollywood star. They clearly think that accidents like this and regular slaughters of school children and other random targets are a price worth paying.
From what I've seen of the debates about gun laws, the pro-shooter lobby can be charitably said to be as thick as pigshit and beyond any kind of reasoning.
It varies by individual and by factors such as age, ability, genes, fitness level etc.
But in general, and roughly, a couple of weeks shouldn't make any difference. My reckoning is that once you get to a month or beyond you should allow the same amount of time to get back to 90 per cent of where you were and the same amount of time again to regain that final 10 per cent. Assuming that you resume training sensibly and gradually and after injury let yourself recover properly, and not think you can just carry on where you left off.
That's my experience, but I'm in my mid-50s and usually somewhere in the middle of the pack. Your mileage might vary.