You can use gems to craft under the "Crafting" tab of the F4 menu, you can get Nitro glycerine, Nerve gas, and a gluon gun. You can still get Blueprints from Blueprint cases by raiding the vault successfully, and buying booster packs.

You can use gems to craft under the "Crafting" tab of the F4 menu, you can get Nitro glycerine, Nerve gas, and a gluon gun. You can still get Blueprints from Blueprint cases by raiding the vault successfully, and buying booster packs.