You're talking about the AT-IC (All Terrain Ion Cannon) that was part of Kenner's extension for the Star Wars line in 1986. It never got off the ground though as Star Wars gave way to GI Joe, Transformers, He-Man, and more in the mid to late 80's. The entire story of this pretty cool concept can be found as always at the TRG Archive.
So basically, it's an AT-AT with the back cut open and the cannon from the Death Star Playset on the back.I want one!
Quote from: Matt_Fury on August 28, 2006, 10:44 PMSo basically, it's an AT-AT with the back cut open and the cannon from the Death Star Playset on the back.I want one! it looks like a cut up at-at with the death star gun mounted in it. maybe not too hard of a custom to make.