Makes one wonder why it takes so long with all the technology today to produce a new shotgun, two barrels, ages-old action and a stock. When the British went to Washington in May 1940 looking for a new fighter aircraft---nearly 1 1/2 years before US entered the war---North American rolled out a flying Mustang almost five months to the day rough sketches were submitted to the British for approval. Imagine it: not only a breakthrough in design and performance but at a cost of $15 million for 320 aircraft, $47,000 each!