Is it a LMG or JSAR for sale?

[camstuff 0]

https://www.gunbroker.com/item/852925793

juat found this today a don’t know exactly what this is.  Is it a JSAR converted to use the horizontal magazine?   

Edited January 12, 2020 by camstuff
Added pictures

[Ed Johnson 0]

JAMCO did not make this. It is something fabricated by an outside party. It is NOT a prototype. If you refer to the Johnson Rifle section, Bruce Canfield makes a proper summary. And....welcome aboard. Glad you were able to get on.  ej

[ArtR 0]

Camstuff: Follow this link/thread on the JSAR forum for more discussion on this rifle