If there were a Zombie Apocalypse, what weapon would you use?

If there were to be a Zombie Infection to spread across the world, what weapon would you choose to use?

Jim Logan

 * 1) Blunderbuss
 * 2) Sawed-Off Shotgun
 * 3) Mouser Pistol
 * 4) AK-47
 * 5) Ya I am old fashioned, get over it.