Your analogy if false. It’s more like being able to have your own R/C model helicopter, but the average person will still never own a real helicopter. Selective Laser sintering systems are a quarter-million bucks and aren’t likely to get cheaper, even after the core patents expire next year. They’ve been around since the mid-80s, so like most of what is coming out about 3D Printing, it’s more hype than anything. Cheap SLS machines won’t be coming to your hobby room anytime soon...Expert opinions back me up on this:
Their are people out there who can afford any toy they want 250 thousand to make your own guns why not.