If you are shooting on one script...say something like the previous idea

var myRocket:Transform;

function Shoot()
{
    var rocket=Instantiate(myRocket,transform.position,Quaternion.identity);

    //rocket.doSomethingElse;
    //Maybe make a var on rocket true, or speed faster, or any number of things
    //be creative but be logical in doing so(fill Shoot overload with speed etc..
}

thanks... i'll try it.. but i need some more reference and some snippet codes or something..

appreciate it @hijinxbassist..

Since you dont have any code in your questions its tough to guess the proper coding technique. This is a basic structure which i provide, here is a little more on top of that..again tough to give specifics w.o actually code present

//On Player
//cur shot is determined from a series of actions
//the cur shot may be 1,2,3,etc if the weapons are
//set as so(maybe) add(if input getButton(1) curShot="SomeShot")
//i cant be more specifice w.o specific code
//canFire is a boolean to dealy shot time(if true plr can shoot)

function Update()
{
     if(Input.GetButtonDown("Fire")
     {
         if(canFire)Shoot(curShot,2);
     }
}
function Shoot(shotType:Transform,shotLife:float)
{
    var shot=Instantiate(shotType,transform.forward,transform.rotation);
    shot.GetComponent(Shot).shotLife==shotLife;//Makes the shotLife 2
    //granted shotType has a Comonent(Shot) and a variable called shotLife
    //the basic idea is:(shotLife==how long shot is active in scene)
    //which is define on a separate script(Shot) which is attached to
    //the curShot(a variable which may change, num1=pistol, num2=shotgun)
}