In the Lee Child book
Die Trying (Jack Reacher, Book 2), Chapter 1, Page 3, you can read this:
Chapter 1, Page 3 wrote:The handgun was a nine-millimeter automatic. It was brand-new. It was oiled. It was held low, lined up right on his hold scar. The guy holding it looked more or less like he knew what he was doing. The safety mechanism was released.
But a few pages later (talking about the same situation, and the same gun pointed at him):
Chapter 1, Page 5 wrote:The leader was twisted around in the front seat with his gun hand resting against the thick leather headrest. The gun was pointed straight at Reacher's chest. It was a Glock 17.