is it fully random so every mission has the same chances or are there missions with very high chances for sniper rifles and missions which are not worth it even if you do them 100 times ?

I guess mission with name Taviana Sniper got good chances for sniper rifle^^ Cats don't plan to do new screens cause catch agro about nerfed rewards.

I'm working on a list of the % chance of rewards for certain missions so if you have pictures of the rewards you get from missions pm them to me! Thanks