Weapon

using UnityEngine;

public class Weapon : MonoBehaviour {

    public Rigidbody bullet;
    public Transform aimPoint;
    public float fireForce;
    public float rejection;

    private void Update() {
        if (Input.GetKeyDown(KeyCode.Space)) {
            Rigidbody copy = Instantiate(bullet, aimPoint.position, Quaternion.identity);
            Vector3 direction = aimPoint.forward;
            direction.x += Random.Range(-rejection, rejection);
            direction.y += Random.Range(-rejection, rejection);
            copy.AddForce(direction * fireForce);
        }
    }
}