Today's build is a Hoth laser cannon. The official term is a "1.4 FD P-Tower laser cannon." I thought for sure that even your standard Star Wars fan would have no idea what a "1.4 FD P-Tower laser cannon" is, but then I asked Boyfriend if he knew what it was, just off the top of his head, and he sent me this picture, so apparently he knew:
Lego Hoth laser cannon:
Episode V Hoth laser cannon:
The problem is that we need a rebel minifig to operate this laser cannon, but we don't have one yet. Maybe General Veers wants to use it?
Hopefully we'll get a rebel soon!
For more information on the Hoth laser cannon / 1.4 FD P-tower laser cannon / Atgar laser cannon, see Wookieepedia.
For parts information for this build, see Bricklink.