My apologies, I know this isn't actually a horror gaming forum but issue 8 of Protodimension Magazine is now out and it includes some stuff that might interest you guys. We have an examination of the different types of, and uses for thermal imaging equipment and a write up on different ammunition types. This is in addition to the usual mix of horror & conspiracy style material.
Download from here for free:
http://www.protodimension.com/zine/?page_id=101