Quote Originally Posted by Nik View Post
Is it worth it to get SR wep bricks? It feels like my grid is currently stuck because I have all these lb1 SR kami weps with almost maxed skill levels...or should I not be using them period and just get dupes of ult raid weps?
Bolded it for you. They also drop from Standard and Expert, though much more rarely (since those also drop the garbage Defender weapons too).

You'll need 60k Orbs for the Kaisers alone, and as a newer player, probably a lot more for the basic Eidolons too. So you can't afford to waste Orbs on SR bricks.