I just finished Point of Impact by Stephen Hunter.

Point of Impact is the first of the Bob Swagger novels, son of Earl Swagger who was used in novels I wrote about here and here.  It was also made into a movie starring Mark Wahlberg.  The name was changed to Shooter and the war Swagger fought in was changed from Vietnam to Iraq, but otherwise it follows the story fairly faithfully.

Not much to say about the book - tough guy gets betrayed, gets revenge and outwits (and out-shoots) his opponents.  Decently written, well plotted and the gun discussions don't take over the story.