I had noticed the "Marui 1/16 Tiger I" in your signature line long before but I didn't say anything. Apparently you had not even taken ownership of it yet!

There is no such thing nor has there ever been a
Tokyo-Marui 1/16 Tiger I. There is a 1/24 version however and this is probably the one of which you speak.
Sorry you fell for that well-known deception but almost every advertisement for Heng Long tanks (especially the 1/24 airsoft tanks)erroneously claim that they are "Marui OEM tanks." You will have a hard time finding vendors who will actually name Heng Long as the manufacturer. The Marui claim is an openly deceptive advertisement and for many of us to knowingly purchase tanks from these distributors doesn't exactly speak well about our character perhaps. The popular opinion is that we should be taking our business elsewhere.
When in doubt, please don't hesitate to ask the well-informed forum members here regardless if this matter has been hashed over ad infinitum.
Paying a few extra dinero for the S&S version it is definitely worth it. By casual research, it is often $7-$8 more than the older 2-speed tank...