Ideally, your physical prowess will combine with your tactical tools to allow you to survive the zombie hordes. The well-appointed Seekins Precision AR-15 to the left would be the candle in your ZATA birthday cake, my friend.
And where can you go to determine what OTHER tactical tools you may need?
Below is a gentleman who has done the firearms research for you, and enthusiastically tests them.
Russ Craber, MBA, CSCS, has always been concerned about a post-apocalyptic zombie scenario, and can train you for optimal living after the inevitable occurs. You would be well-advised to heed his advice.