Carcano Cavalry Carbine Scabbaard
I've been wanting one of these since I learned of their existence but was unwilling to pay $260 for one of them. But I kept watching and finally acquired one for less than half that. It arrived today.
Still trying to figure it out but I did get the rifle in it correctly I believe although i don't believe they were meant to fit with the sling installed as it is pretty tight. I guess if you have a scabbard, you don't need a sling.
It has an odd cover that to be locked into place the bolt head fits into a pocket and it is then closed. Only then can the strap close around the stock.
I'll get some photos of it up soon.