Final: I purchased FUTABA 3PK SUPER PISTOL GRIP!
Rc users, please forgive me for my comment was harsh toward futaba. Now see what happend that I purchased Futaba 3PK Super Pistol Grip with 75mhz a Module and Receiver instead of Airtronic pistol grip. That Futaba 3PK already fell in love with me ALREADY. Futaba. Hobby store explained and introduced the futaba 3PK to me, it can upgrade or downgrade module 2.4ghz or 27mhz. like all in the one SUPER PISTOL GRIP! that why my tempt bought it! no regret about it.
Many thanks for help me out and this forums is more worth and friendly!