Evolve into what? They make what to my mind is the best SD and service pistol in the world for the price. Why change? Its like asking BK why they don't make pizzas. However I agree that I would eagerly buy a carbine that used thier existing pistol mags. Still, beyond this, why mess wth perfection? They do one thing, and do it well. Why change to enter into other markets where they would be a Jonhny come lately?
FQ13