ego 1300, I haven't seen a orange weapon, grenade, or shield anywhere other than a lockbox. I recieved orange grenades Thursday (tier 2) and a pistol today (tier 3).
"Rare" loot is actually blue (green = "uncommon", purple = "epic", etc.) so I read this "rare loot weekend" as "blue loot weekend" - or simply "meh".
P.S. I've never seen a single purple drop from a mob yet alone orange.
http://www.sca.org/ < Society for Creative Anachronism >
http://www.aethelmearc.org/ < Kingdom of AEthelmearc >
http://www.blackstonemountain.org/ < Barony of Blackstone Mountain >
Muntant Shotgunner - Hey you guy!
Muntant Shotgunner - Today you die!
Muntant Rifleman - Take a bow!
Muntant Rifleman - Take them down!
have to be rank 5000 for that 0.00001% chance at orange loot.
hey, it's still a chance.
I could be mistaken, but my takeaway from the rare loot weekend event is that your chances increase because there is simply more loot dropping. I haven't seen any increase in rarity per-se, but I have seen an increase in the amount of drops. The more things drop, the better your chances at scoring something useful. 8791263847123 white drops is not the same as a purple or an orange though.