Colt M16 A2 LMG 5.56 NATO Used Complete Upper, Semi-Auto Configuration, New In Box - $3499.99

They has trouble selling them for $800

With the descriptions here, I wouldn't be surprised if you receive a bolt action gun

Note the LMG in the model.
Light Machine Gun
Weren't many made before the M249 took over, but this is a terrible example if it does have a semi-auto bolt group but is in full auto configuration (does ANYONE understand that part?).

These guys are obviously dipshits, full auto is only applicable to the lower and this is only the upper.
It's new but it's used.
It's black but it's white ?

Seems pretty expensive for a heavy barrel and ugly handguard.

How is this 'used' but also 'new in box.'

It's used...