The film director is putting words into the mouth of the original engineer. I speak Russian quite well and at no time does Mikhail Kalashnikov state that he feels that criminal use of guns in the US is what he regrets the most. Yet the narrator makes this point and the movie seems to attempt to make this point several times.
The director also is quite misdirected in their information on steel-core bullets, AKA armor-piercing bullets.
In short, I'm a bit confused why two German film producers are so concerned about guns in the United States. And I'm very confused about how they seem to think that a Russian produced gun is somehow one of America's largest threats, as if other machine guns weren't available had this one not been produced? It's an OK film, but it's a bit annoying to wade through all the anti-gun nonsense just to get to the interesting bits. And in a bit of drama they ended the film with a bunch of hicks shooting up some gun range for no reason whatsoever. Only point in the damn film where an American shows up with a backwoods accent and of course they're acting like a bunch of jackasses...never mind the intelligent police officers that briefed the guy on the LA bank robbery that happened a few years ago. Yup, us dumb Americans can't be trusted with them crazy Russian machine guns.