The list author says: "Here are some items to acquire when the poop hits the fan. List includes necessary items such as: emergency food, water, weapons, weapon maintenance, clothing, etc. Of course having a 40 item cap can't cover everything but this is just to cover the essentials. This list will serve as a basic guideline for what you need to consider for survival.
I don't know much about guns but I would get a Beretta 92A1 or 96A1 since its reliable, shoots both 9mm and .40 S&W rounds and has a magazine capacity that holds 17/12 rounds, respectively. Also, a silencer and a flashlight/laser combo for the rail. Not sure what make of ammo you should get but at least 500 9mm rounds and 200 .40 S&W rounds. I figure ammo will be hard to come by so use a melee weapon to conserve ammo and if you really need to shoot a zombie or defend yourself from bad people, remember: 1 shot, 1 kill. Tactical gear is important but I focused more on protective clothing because what good is a tactical vest when you are dead or worse a zombie?"