This model from Tamiya is ready to go right out of the box since it's fully assembled. The product's scale is 1:10.
From Appliance Electronics
Tamiya Mercedes-Benz Unimog 406 Series U900 - Pre-Painted (CC-02) TAM47465
eModels
Tamiya 1/10 Unimog 406 BG Painted CC-02 # 47465
Model Bau
Tamiya Unimog 406 BG Painted CC-02 47465