Yeah, both are salvaged from the Xbox version of the game.
Scroll down until you see the M4-78 and droid factory modules (
http://www.team-gizka.org/downloads.html)
The modules can't be reached through any normal gameplay, so you'll have to type in the cheat console
for M4-78
warp 801DRO
for the HK factory
warp 298TEL :)