Originally Posted by The_Raganork
That thing Lucius shows to Bruce can't be the Bat. It's much too small. Got to be a mock up/prototype. Perhaps the Bat is housed elsewhere, this is how whomever misses it when getting the tumblers.
It looks big to me. When Bruce and Lucius get closer to it, look at the size of the gun and the door of the Bat.
And compare the Bat to the computer display next to it.