These blueprints suck when I’m legend lvl 20. They’re only half as strong as my current weapon, even after upgrading the blueprints. Wish they did a better job of my lvl affecting the strength of the blueprint when I found them
Yes to both of your questions, the new update that just dropped added weapon blueprints and once you get a blueprint as long as you can afford the materials and money to make them you can keep making them.
