Hitman: Blood Money Easter Egg - Death of a Showman - Hidden Devil's Uzi with 666 bullets

In the first level, Death of a Showman after getting past the entrance you will need to go through the gift shop as rubble blocks the path ahead.

Go through and dispose of the two guards and walk outside, walking outside the decking and around to the other side of where they were standing.

You will now be at the other side of the heap of rubble. If you look down there is a little cardboard box in the heap.

If you walk and stand precisely on top of the box you can pick up the hidden Uzi.

The Uzi has 25 bullets in the clip and 666 bullets seperate. It is in fact just a standard Uzi, but considering the amount of bullets and the giant Devil head in the theatre I think it is natural to call it the Devil's Uzi.