Over the years, I've read my share of SHTF (Sh*t hit the fan), TEOTWAWKI (The End of the World As We Know It), and Apocalypse threads on various not-so-professional message boards (yes, I'm a nerd). I don't think these are helpful ways to frame a training program or guide your firearms purchases. I've even had my own supposedly non-mall ninja friends ask me what I'd use in such a circumstance. While I don't think these kinds of conversations help the pro-gun world win many friends, sometimes it is fun to pretend. I love zombie movies, and have played some "Left For Dead" as well as the "Nazi Zombies" level on COD World At War. So in interest of rampant sillyness, I give you my ideal arsenal for the Zombie Apocalypse.
First off, I'd carry a rifle, a shotgun, and handgun. I have a vest system that supports all three weapons and isn't that much heavier for it. I can carry 10 magazines for an AR-15 style rifle, 60 rounds of 12ga ammo, and four double-stack pistol mags or seven single stack pistol magazines. I would opt for my German surplus flak vest underneath because it is light and flexible, but would still protect me from errant rounds my rag-tag band of survivors might send my way. We all know zombies can't use guns, but I would like the protection anyway. It could concievably prevent some bites or scratches that would otherwise turn me into a stumbling, bleary eyed, mindless destroyer of nations (no, not an Obama supporter...zing!).
Starting at the low end of the power spectrum--the pistol. My chosen World War Z pistol is.....the M&P 9L.
The M&P 9mm with a 5" barrel provides a better sight plane and a little extra horsepower for those 124gr XTP's I'll be launching into the forbrains of the undead army. It holds 17+1 rounds, but the mags can be overhauled with an Arredondo +6 round magazine extension. That gives me a whopping 23+1 capacity. Four of those mags is 92 rounds, plus my one extra in the chamber to start with means 93 rounds just for my pistol. This bodes well for my ability to survive and run away with Jessica Biel and Scarlet Johanssen to repopulate the Earth. In all seriousness though, the M&P has, in my experience, proven itself every bit as reliable as the Glock, but with far better ergonomics and a better trigger. The undead will wither under the muzzle of my fearsome M&P 9L. And since we're fighting zombies, the "mine's bigger than yours" argument of .45 vs 9mm becomes irrelevant because the only good shot is a headshot that destroys the brain. So the 9x19mm is clearly better because of less recoil and higher capacity.
My shotgun will naturally be my Benelli Nova slugger with the Tac Star +2 mag extension. My ammo of choice will be Centurion Multi-Defense, which tosses a .65" ball behind a curtain of six 00 buckshot pellets. Those zombies are entering a world of pain.
This round can be accurately aimed like a slug, but also gives you some spread from the six 00 buck pellets (which are .33" each). Aside from being pretty, my Benelli is a truly glorious shotgun to shoot. My friends and I have decided it may be powered by the soul of an orphaned child and uses this dark magic to make it more accurate. I have a scabbard that allows me to carry the Benelli on the back of my armor, always keeping it handy should I need to do a Detroit reload, or hand a weapon to a newfound survivor (hopefully either Jessica or Scarlet).
My rifle will be my trusty M&P15 carbine with an EOTech holographic sight. The M&P15 has proven itself utterly reliable shooting Wolf steel case ammo, surplus XM193, my reloads, and even a bit of factory ammo from Remington. I dropped a Rock River Arms two-stage match trigger in it for a lighter pull, and it performs famously. I love it. One day, I will once again own an EOTech (I had one but sold it when I was in a tight financial spot. Wish I hadn't.). It is the fastest and most accurate holographic sight you can get. The Special Forces all carried them in Afghanistan when I was there and they were issued Aimpoints. However, the Aimpoints are fragile and only capable of either 4 MOA or 2 MOA, while the EOTech does 1MOA. And it will. I've seen 1" and 1.5" groups at 100 yards from my buddy's RRA carbine, and my Bushmaster National Match made several 1" groups at 100 yards using the EOTech and XM193 ammunition. My M&P15 with an EOTech and 300 rounds will put the undead back in their graves--one way or another.
All the ammo will be easy to come by if my supply gets low. 9x19mm, 5.56x45 (or .223 Rem), and 12ga are all in HUGE circulation in the law enforcement and military community. Once they are overwhelmed by the undead hordes, I will be able to get as much as I want. And if you weren't counting, my total ammo count is 453 rounds. That should be good for getting me out of The Hive or making it to The Winchester for a pint and some chips.