Was looking through the "Beyond the Rim" book today (just got it) and was looking forward to finally getting a description of the TT24 Holdout Blaster.
Dissapointingly, there wasn't one.
However, when googling for it, I found the 22T4 Holdout Blaster on Wookieepedia.
It states that it was the standard holdout blaster given to all ISB agents during the time the game is set in.
Now, considering the similarity in the names, I suspect it's simply a typo, and the TT24 is actually a 22T4.
Especially since the only characters depicted with a TT24 are ISB agents.
Now, I'm going to personally use that in my sessions, and the TT24 will simply be renamed to 22T4 and use the image provided in Wookieepedia.
However, I'm curious to know what all of you think of this (and if it's ever been mentioned to the devs).