Thanks for the replies everyone. Yes, the oiler and sling are repros. I think I may have got them at the same gun show I bought the rifle at, but I cant remember. I have no idea who manufactured it.

When it comes to slings, I will buy a repro before I spend a ton of money on an authentic one. My Garandicon, M1917, M1903, and Krag are all wearing repro slings.