This is a crime novel at it’s heart. There are guns. Lots of them.
So I’ve been going about the process of not only familiarizing myself with various types of firearms so when I write about them someone who is familiar won’t be throwing my book against a wall. There are any number of blogs and books about this. Right now I’m looking at Thrillwriting, Correia on Writing Gun Stuff, and a couple of writer’s books, but at some point also I’ll be going out to a range and doing some shooting.
Also, I’ve been looking at tons of SF concept guns to get ideas for what my character’s standard issue sidearm might look like, his personal sidearm, etc, etc.
This is the top one so far.