[JustBored]

It's pretty easy, the thing of the serial code you have to make a variable for example pSerial, then the thing of the weapons in your hand you have to check if the player has 1 or more bullets in his weapon if he doesnt have them add a attachedobject (SetPlayerAttachedObject) and then if they want to have more bullets they will have to go to the ammunation and buy a box of bullets then if they put a command for example /reload give them the quantity of bullets they bought.