OOP and bloody tough to locate, generally. There's one listed on ebay. One. I wouldn't call it an NBC cape, personally. From the scan of the box-art on ebay, it looks more like the lightweight parka.
eta: Rechecked the pic and looks like 2 in parkas and 2 in flak vests.
If I can EVER find a kit with some G-36 rifles in it, I'll be making that Fallschirmjaeger kit up as a modern unit, in flecktarn. (I anticipate going blind shortly thereafter from all the tiny dots...)