There are 4 emblems, 1 for each of the weapon foundries. They should be randomly awarded from rank-up packages from Banshee, but I have reset my rank with him 4 times this season and haven't seen them. I have also been playing for 2 years without a drop. I searched his manifest on light.gg and did not find the item numbers as a possible drop anywhere in his code. The item hash for Veist Upgrade is 3605230075 and its stack unique label is v300.emblems.rare.faction_gunsmith2. Please fix! Alternatively, my opinion is that these emblems should be directly purchasable for maybe 10 gunsmith engrams or tied to a triumph for disassembling weapons from each foundry.