I have assembled the upper and lower receiver of the orca with all the standard parts and a super safety. The problem i am facing is that when I put the upper on the lower the charging handle/bolt carrier does not want to budge. Does the lower look ok mechanically? Is the bufferspring and the super safety in the right position? I'm so close and this project has taken me months to finish. The bolt carrier moves when it's not on the lower albeit with some very minor roughness.
