LineRender in Raycast

Hey, im using raycast system to damage an enemy in my game and i need to render the "bullet trail" but i dont figure out how, can you guys help?

heres my shoot script:

 if (pistola)
    {
        forcaArma = 10;
        damage = 10;
        if (Input.GetMouseButtonDown(0) && ammo > 0 && rechargetime <= 1F)
        {
            Vector3 fwd = transform.forward;
            ammo--;
            rechargetime = 1F;
            RaycastHit hit;
            if (Physics.Raycast(transform.position, fwd, out hit))
            {
                //cria bullethole
                if (hit.transform.gameObject.tag == "Wall")
                {
                    var hitRotation = Quaternion.FromToRotation(Vector3.up, hit.normal);
                    Instantiate(bulletHole, hit.point, hitRotation);
                }
                //acerta inimigo
                if (hit.transform.gameObject.tag == "Enemy")
                {
                    //addforce
                    hit.transform.rigidbody.AddRelativeForce(-hit.normal * forcaArma);
                    //collidir dano
                    hit.transform.gameObject.GetComponent<BasicAI>().ApplyDamage(damage);
                }
                if (hit.transform.gameObject.tag == "Boss")
                {
                    hit.transform.gameObject.GetComponent<BossMonsterClass>().ApplyDamage(damage);
                }
            }
        }
    }