Saugus, CA "ghost gun" construction used "80%" content? True?

[surprise_i'm_armed]

https://www.nbcnews.com/news/us-news/st ... d-n1089411

The above link states that the .45 pistol that the Saugus, CA shooter used was a ghost gun, created by buying 80% of it, then buying the 20% of the other needed components to enable it to be a working firearm.

I may be showing my naivete here, but the only 80% situation I am aware of is when you are building an AR-15.

Is there actually an 80/20 set of purchases that an underage (< 21) boy can make, and construct a .45 pistol?

Or did the news media cross-pollinate the story when the LEO's said it was a ghost gun?

It seems to me if the shooter actually built his own pistol, that he could have had a promising career doing something technical. Of course, not now.

TIA / SIA

[Texas_Blaze]

https://americanweaponscomponents.com/p ... mer-pistol

The frame (usually this is what’s serialized by mfg)
https://americanweaponscomponents.com/p ... -five-pack

At that site...no FFL required for frame. (Requires final machining like the AR lower)

*Edited to add sentence in ().

[surprise_i'm_armed]

Thanks for the education on DIY pistols.

SIA

[Grayling813]

NBC news would never distort the truth or lie, right?