See that little screen in front of her optic? Do you know what that is and do you see it on a real MK18? No you don’t because it’s to stop the BB’s from hurting the scope lens. BBs will wreck a nice $600 optic.
Also, the stock has the tubular shape on both sides to hold long batteries. Anyone who knows ARs will see all kinds of FUBAR on what she is holding.
The airsoft assassin of Kiev.
see here:
https://www.kcodegeel.com/index.php?main_page=product_info&products_id=611458
Unfortunately, the image does not open in any app I have so I cannot blow it up to look closely, but the ‘thingy’ you refer to appears to be an empty wire enclosure, not like the filled in ones on the site you referenced. I could be wrong and its not worth my spending time on.