Did you add all of the Zimmerit? I know that when you buy the late version Airsoft Turret, with the Barrel Recoil Feature, it has Zimmerit attached; but did you cover the hull as well? If so, well done.
If you only wanted a flashing light, then you've bought the wrong turret, I think. The IR version will give you an intense flashing light in the muzzle,
plus barrel recoil. Airsoft (with no BBs loaded); zilch but the recoil and the bang.
Airsoft will still offer a red LED warning light, but that's hardly a desirable feature, as real Tiger didn't have one.

It's there to warn that a BB's about to be dischaged. I guess, if you have concerns
about Airsoft because of kids and pets the warning light has a nominal practical value.
Personally, I like the Airsoft unit with barrel recoil- as it's more like the real thing, arguably, than the IR version. IR is for those who enjoy Tamiya-style battling in clubs.
For the present, it looks like a tank with amazing potential! V

Very nice
Planning, and knowing what you want with a model, can save dollars down the line. Then again, playing it by ear- and improvising- can be fun too...

"Get your facts first, and then you can distort them as much as you please"- Mark Twain.