Lots of things. I had a whole case. Extra ammo, some more medicinal stuff, some food... a few more firearms.

[Speaking of which, he picks up the handgun they'd returned to him and double checks it, a full mag, and a round in the chamber and it looks just like the last time he'd seen it. He finds it kind of strange they'd allow him any guns but apparently they were quite confident in the power they held here.]

What do you mean? Like they kept some of your stuff, too?