explains step-by-step how he painted 
We released the DORC (the Deep Ocean Research Centre) buildings almost three years ago (really – was it that long? We had to double check to make sure). And now it's finally time to add to them with this pair of defense turrets to ward off threats from on or above the surface. A twin railgun turret and ten-round long-range missile-launcher should be enough to see off most intruders, human or alien (there are some big beasts under the waves out here…).
B300-1240 – DORC Defence Turrets – £4.00 GBP