It's a Black Library ebook with sound effects for some weapons. I think they can be used for some FX as if there weren't enough of them 
There's a video on Youtube showing them:
https://www.youtube....h?v=AOpmjgocID8
There's also a Mega link from I got them separately.
edit: hint, it's in the Warhammer 40k general threads in /tg
Edited by Roderick, 28 September 2016 - 08:20 PM.
