British troops in Afghanistan are now using 10-centimeter-long 16-gram spy helicopters to survey Taliban firing spots. The UK Defense Ministry plans to buy 160 of the drones under a contract worth more than $31 million.
The remote-controlled PD-100 PRS aircraft, dubbed the Black Hornet, is produced by Norwegian designer Prox Dynamics. The drone is a traditional single-rotor helicopter, scaled down to the size of a toy. British troops use the drones for reconnaissance missions, sending them ahead to inspect enemy positions.