Temp stop rigidbody

using UnityEngine;
using System.Collections;

public class TemporarilyStopRigidbody : MonoBehaviour
{
    public Rigidbody Rigidbody;

    Vector3 m_LastVelocity;
    Vector3 m_LastAngularVelocity;

    void Update()
    {
        if (Input.GetButtonDown("Fire2"))
        {
            m_LastVelocity = Rigidbody.velocity;
            m_LastAngularVelocity = Rigidbody.angularVelocity;
            Rigidbody.isKinematic = true;
        }
        else if (Input.GetButtonUp("Fire2"))
        {
            Rigidbody.isKinematic = false;
            Rigidbody.velocity = m_LastVelocity;
            Rigidbody.angularVelocity = m_LastAngularVelocity;
        }
    }
}