I don't think Bungie uses RNG. I've thought this for months now because I play with the same group of people every week. We all get the same guns every week. I've gotten 6-9 duplicates of multiple exotics. The only way to truly get a sense of how the guns are being distributed is by playing every week for months with the same groups of people. Which is what we have done. If Bungie was truly using a random number generator, it would be similar to your team throwing dice every week for months. That sounds fair, only everyone we play with is throwing the same dice numbers every week. That's pretty improbable. For those who have every exotic, it isn't crazy to think Bungie used a system that broke everyone into 3 groups. No one except the designers know for sure. But I highly doubt a person can play since the first day this game came out and not have a certain weapon. Not to mention most people at this point have 3 characters and are doing both raids 3 times each + Nightfalls. I still love this game, I just don't think it uses RNG.