Do we have exact drop rates for certain weapons in the post-game reward screen?

I did try searching but couldn't find anything and I apologise if this is in the wrong place, but do we know of either exact or close percentage of drop rates of specific weapons?

I know RNG is RNG but I've been on the hunt for an Eyasluna for as long as I can remember, I have over 100 days playing time since year 2, and 95% of that has been in PvP.

I've had maybe 5 drop in my ENTIRE time playing Destiny, all of which have been awful.

I guess I'm finally just starting to get frustrated, especially as at the moment I'm stuck in lobbies with top top tier players all using Rifled Barrel, Rangefinder LitC god roll Lunas and I'm stuck with a Hand Loaded, Surrounded Luna that is worthless in comparison.