CD87 p92 - SS tells us the rifle Kleins shipped to Hidell was a 91(T)roop (S)pecial carbine

[Drew Phipps]

"Usually" doesn't mean anything for this rifle. There are so many anomalies to it, I don't think its safe to assume anything is true that you can't see. Sure looks to me like the butt-end mount is on the side and the barrel-end mount is on the bottom to me. You should also remember that the sling itself is a hand-made job, not anything specific to this type of rifle. The sling that shows in this picture doesn't have a leather pad attached to it like the recovered rifle did. I might be able to find a picture of the sling, if so I'll insert at edit. Of course, it that's really a 5' 9" LHO standing there, then the gun in that picture is 2 inches too long to be the rifle recovered from the book depository.