The article you linked offered very little useful information.

While I'm typing, I'll offer a WAG as to what those parts aren't. I don't think they are lowers because actual (or Chi-Com manufactured) M16 lower would require far to much effort for our inner-city folk to turn into a working select fire rifle.

I mean, what respectable, crack-smoking thug would possess the working knowledge of the AR15/M16 platform, much less have access to auto sears, springs, roll pins?

I'd guess the parts could be DIASs, but then what good are they if one can't mill an AR15 lower?

Can't mill a lower? Then use a Lightning Link, or even a Swift Link. But, again, using these devices will require a fair bit of mechanical and gun smithing know-how, along with armorer's tools, neither of which are generally found in your average urban environment.

Since I'm a complete dumbass when it comes to firearms, what is your expert opinion on what parts were actually shipped?

The article you linked offered very little useful information.

While I'm typing, I'll offer a WAG as to what those parts aren't. I don't think they are lowers because actual (or Chi-Com manufactured) M16 lower would require far to much effort for our inner-city folk to turn into a working select fire rifle. I mean, what crack-smoking thug who happens to have a working AR15 laying around, and also has access to auto sears, springs, roll pins?

I'd guess the parts could be DIASs, but then what good are they if one can't mill an AR15 lower?

Can't mill a lower? Then use a Lightning Link, or even a Swift Link. But, again, using these devices will require a fair bit of mechanical and gun smithing know-how, along with armorer's tools, neither of which are generally found in your average urban environment.

Since I'm a complete dumbass when it comes to firearms, what is your expert opinion on what parts were actually shipped?