This is my challenger 3X model. No it does not exist in real life but a concept i though of where a Remote control 50cal turret is atop to tackle drones. As well as a more Leopard style mantlet. 

A note for printing

The turret on top is very fragile and is not recommended for beginners

If you have read this far Im sure you know what I am about to ask for and why but obvoisly only if you find what i do useful :)