Two Three things about this gun, 1st, I was under the impression that the "HK" style sights were intended for more precise shooting. A red dot or laser seems more appropriate.
2nd At the end of the day, it's just an ultra short semi auto shotgun, that won't do anything a sawed off Auto 5 won't do, tear sh!t up ? Hell yeah

But not at any range that would justify it's size and presumed weight also the magazine eliminates the type of concealability you get with the Serbu type shorties so it isn't useful for those type of "covert" applications..
3rd Price
My opinion is it would be a kick azz toy, but still just a plaything.