Dumb question...I have an Ithaca Flues SBT gun. Want to store in a take down case. How do I release the top lever when the barrel and forend are off? Thnx

Look down in front of the locking lug and you will see part of a disc. hold the lever to the right, push down on the disc with pencil or ? release lever.

Thanks...I assumed that I needed to depress the disk but wasn’t certain. Foxnut