2, 3 key fired shells, VTOL control rotation, support differential steering, track and body only two connection points can be removed with off-road capability, can also remove differential rotation, cross-country differential BUG on the concrete, I cannot solve, due to technical and limited space, only two rounds of ammunition. Forgive me. The tank is in the 1.6 version, the 1.7 operation may have BUG, the chassis is somewhat low, the ridge may be stuck, please sideways on the line, not too deep. If it is found that the fire gun did not seem to move, it may be because the system operator error, slow down the lens can observe the mechanical action, buffer device may be back in slow motion over, excuse me, does not affect the operation effects of the explosion sometimes no, this is a BUG, forgive me, for in the fire may have no effect. Because of no shell stabilizer, so it may deviate from the trajectory of something serious, more is because the explosion impact problem. This is my first special effects work, bad or BUG, please forgive me.