The Hasbro Death Star Gunner has incorrect armor. This can easily be fixed if you have one of the new Sandtroopers. Simply take of the Paulron (shoulder armor), carefully snip off the little pouch, turn it 90 degrees so that the hole is on the top. Slip that over the head "ball" and voila you have the correct armor. To maintain this armor against the chest, make a small hole near each of the bottom corners of the armor to put string in and tie it around the back. Make a small knot just bigger than the hole, slip you string through the hole until the knot comes in contact but does not pass through the hole. Take the string around the back, slip it through the other hole. Now the only part is tying the other not close to the other hole. After doign this and that second knot does not slip through the hole, snip off the excess string and bam, the armor is secure.
Now you say, "but I have to lose a sandtrooper by doing this." Not really, there were some Sandtroopers that did not have paulrons. Besides if you get some good paint remover, I suggest ELO, you can get rid of the sandy paint and bam, you've got a fresh new clean Stormtrooper!!!