Maham Imtiaz
since there are 3 guns, it doesn't know which gun you are referring to when you try to set the angle.
event 27 will have all the guns spawn a bullet, but events 28 to 30 still have all guns picked so it will probably use the first instance's angle.
you need to add a "For each Firegun", then have each one spawn a bullet separately so you can check the animation frame and set the angle properly.