This astromech can be seen rolling down a long Death Star corridor in the distance as Obi-Wan Kenobi steps out of the shadows towards his fateful rematch with Darth Vader.
It’s a fun droid, from the granddaddy of Star Wars films. The dome is strangely cloudy. It was probably intended to be clear, but it didn’t come out quite right. Nevertheless, it’s a great figure to have in the deep recesses of your Death Star display. It looks nice rolling alongside Space Walls.
What you need to build R3-M3:

BD14 Anakin Skywalker
BD16 Luke Skywalker
BD25 Saleucami Trooper

BD15 Jango Fett
BD17 Princess Leia
BD28 Ugnaught

BD13 Obi-Wan Kenobi
BD18 Ewoks
BD26 ARC Trooper

BD12 Biker Scout
BD19 Nien Nunb (B-Wing Pilot)
BD27 Clone Scuba Trooper