Where can I find the MD models?

I believe I heard somewhere that UE asset packs were used in the creation of Murder Drones. I found the cathedral from EP5 and I believe I saw the Manor somewhere but I cannot seem to find it using keywords. I need these for a project so if anyone has links to the bunker or the Manor etc. It would be much appreciated! (:

Murder Drones image to acquire attention in Reddit feed, a movie would be epic though! (: