Correct Way To Implement My Inventory

Ok, I'll try to make this quick here.

My character has 6 inventory bays. In these bays can contain any of my in game objects. Each of these objects can do various things. Seperate bays can contain similar objects but they may have different properities (etc bay 1 could have a pistol with 6 rounds while bay 2 has a pistol with 3). My character activates a bay to use the object.... sounds easy enough.

Now what I want to do is make a moduleInventory class. I would do it like this to start...

function moduleInventory::create(%objectName)
{
   %this = new ScriptObject(%objectName) 
   {
	class = moduleInventory;
   };

   %this.Ammo = 0;
   %this.Activated = false;

   return %this;
}


function moduleInventory::delete(%this)
{
   parent::delete(%this)
}

...ammo and activated are just some experimental properties. Problem is where do I make this class? Would this go into moduleInventory.cs and I'll add it to the game.cs loading? Shouldn't this be client side? I want to create six of these, would I create these objects when I create my player in game.cs? Wouldn't that get complicated client side?