4 Guns, but only 3 are shooting at the same time?

Hello friends, i'm working on a 3D-spaceship "ish" game. My spaceship has 4 guns, that i want to fire at the same time. Also, im checking if the guns have already been shot off. The code:

 private void Update()
     {
 
         countDelay -= Time.deltaTime;
 
 
         if (Input.GetAxis("Fire1") > 0 && countDelay <= 0) 
         {
                 checkWeapons();
                 if (leftAlive)
                 {
                     shoot(left);
                 }
                 if (rightAlive)
                 {
                     shoot(right);
                 }
                 if (rightRightAlive)
                 {
                     shoot(rightRight);
                 }
                 if (leftLeftAlive)
                 {
                     shoot(leftLeft);
                 }
             
             countDelay = shotDelay;
 
         }
     }

As you can see, I'm checking if each of the 4 gun parts are still on the ship (left, leftLeft, right, rightRight). Then I'm calling my shoot fuction on every gun which is still alive:

 void shoot(Transform shotPos)
     {
         GameObject projectile = Instantiate(projectilePrefab);
         projectilePrefab.transform.position = shotPos.transform.position;
         projectilePrefab.transform.rotation = transform.rotation;
         Rigidbody rb = projectile.GetComponent<Rigidbody>();
         rb.velocity = transform.forward * projectileSpeed;
     }

Just for info, the method which checks if the parts are on the ship goes as the following:

 void checkWeapons()
     {
 
         if (weapons[0].transform.parent == player.transform){
             leftAlive = true;
         } else {
             leftAlive = false;
         }
 
         if(weapons[1].transform.parent == player.transform){
             leftLeftAlive = true;
         } else {
             leftLeftAlive = false;
         }
 
         if(weapons[2].transform.parent == player.transform){
             rightAlive = true;
         } else {
             rightAlive = false;
         }
 
         if(weapons[3].transform.parent == player.transform){
             rightRightAlive = true;
         } else {
             rightRightAlive = false;
         }
     }

My problem: when shooting, the gun which i check thelast in Update() always fires with a delay. But when displaying the time in each of the if statements in Update() with "print(time.Time);" they all go at the same time... I apprechiate every idea :)

Greetings Jako