the Russian Mosin-Nagant M91 as a standard issue rifle

@MrCostari I assume that's because it was added later with In the Name of the Tsar and Dice didn't enable the tracking.

@HUN_gattaca_lg Thank you for sharing that, that is very interesting. I downloaded that app and it does show I have just over a 100 kills with the Mosin Nagant standard issue rifle. So it is being tracked in the background. It also says I have a service star with it, however I know I never got a star for it ingame and after browsing through the app some more I can tell the app doesn't really understand how service stars work in BF1 because if you look at vehicles it will give you stars for each vehicle instead of a combined star for a vehicle class.
For example, I have 12 SS with attack planes but when I look at the Rumpler plane for example, which I have 300 kills with, it says I have 3 SS with that plane even though that's not how it works.
It seems like it gives everything a service star, even things don't have SS like the medical syringe for example. I only have 60 kills with that, but I look at it it does say 0 SS. So I bet if I had a 100 kills with it it would say I have 1 SS. Anyway, sorry for dragging this on for so long.

Another interesting thing this app has that can't be seen anywhere else, is more detailed stats for standard issue rifles, like shots fired, shots hit and headshot kills. Standard issue rifles aren't being tracked on BF1Tracker and ingame you can't see these 3 stats but on this app you can. So it's nice to know how many headshots I got with each standard issue rifle.

@HUN_gattaca_lg No, it does not. It doesn't track it at all, not even as frag grenade either. The stick grenade does that, but the russian grenade doesn't.

For me it says I have 0 zero kills but I know I have gotten kills with it.