I'm not even going to pretend to say I'm an avid reader. I actually don't read much, but I will say that I've read almost all of Stephen Hunter's books and love most of them. He's an amazing writer and I highly suggest reading at least one of his.
My favorite is "Point of Impact"... AMAZING book. If you've seen the movie "Shooter" (stars Mark Whalberg, great movie which is why I read the book), it's based on the book.
I've also recently read "No Easy Day", the book by the SEAL member about the Osama Bin Laden raid. "American Sniper" by Chris Kyle (RIP), read that years ago, good read. And also "Lone Survivor" when it first came out. The last two I highly recommend if it's your type of book, "No Easy Day" was just ok. The movie "Lone Survivor" was very good, but also very different from the book.