Could it be a packing piece so 8g capsules can be used? My Drulov in the satchel case doesn’t have anything like that with it and it looks like it’s home made.
That makes perfect sense, I have a lot of 8g’s I bought in a close out sale, will test after my 12g exhausts. I have searched the internet for pics and I have seen this piece in another cased set. So I believe it’s factory?