Terminal Rifle

[Jynx92]

We all know it's possible, it has happened in the past: you are placed in a position that demands you defend yourself because some other force is trying to kill you. For some of you it might help to imagine aliens landed because Chuck Norris finally died and you have to pick a rifle or carbine to defend yourself and your family. For others it might help to image a foreign power invading (not likely on foot, but hang in there) and you need to pick from your arsenal, or local gunshop, a rifle or carbine which you think would be best for your purpose (defending your life). I'm not saying it would be like an arcade game, people popping up at windows left and right, but for realistic purposes.

So if you had to pick any rifle to defend yourself in a End-of-the-World scenario, what would it be?