Shooting from a side gun

I have a robot with a cannon on its right arm. When I fire, the bullet is fired from the robot using:

public Transform FirePoint; /FirePoint is currently set to the robot itself/
public GameObject Laser;
public float bulletSpeed 70;

void FixedUpdate() {
if (Input.GetKey(KeyCode.R)) {
GameObject laser = Instantiate(Laser, FirePoint.position, FirePoint.rotation);
laser.GetComponent().velocity = transform.up * bulletSpeed; } }

However, since the cannon is on his right arm, I want the bullet to spawn a bit to the robot's right no matter which way it's facing. Can someone please explain? Thanks :)