There's several good gun-items in the DAZ weekly freestuff archive, though I find some can need a bit of work to look right in P5. There are three packs of numerous Questor guns; Western, Modern, and Sci-Fi. One of the guns in the Sci-Fi pack looks rather like a Walther PPK. Was the one you use with Sara the "Desert Eagle". It looks a bit big for her hand. Maybe scale it down a little, or use something smaller, like the PPK-clone.