They cannot eliminate that which is (relatively) easy to produce.
Govt can’t keeps out of the hands of criminals BEHIND bars!!
Though, it still irks me to no end to see those across the seas, brandishing\carrying AKs and the like, while being infringed here where our inalienable Rights are supposedly assured/protected (by govt....yeah, I see the rub).
And they area very cheap to build, anywhere.
If you look at what is effective in the urban environment in Syria? The 50BMG and 12.7MM sniper rifles are doing an incredible job. Long range, accurate devastating.
Zagros they call them. There is a company in the US that makes similar rifles. And I've read the North Vietnamese are making a repeating version that is very very good. Have read Israel is employing them.