Is there a drop-in solution to stabilize the gun on a Heng Long 7.0 Leopard 2A6? If not, does anyone here have guidance on a DIY system that is compatible with the stock electronics? I really like the tank, but it looks rather silly with the gun bouncing all over the place.

I believe connection CN14 is for a cannon stabilizer, I have not seen this add-on from HL, but there appears a connection for it on the control module

This is on the TK-6.01s unit

*tk-6.1s

This may offer you some insight...

Gun barrel stabilization...

The TK 7.1 unit has a connection at CN14 and calls it "Extension Function Unit"

Which I suppose is a plug-in for some hop-up item unidentified (was previously the barrel gyro stabilization for the TK 6.1S)