The Glock 17 is the most popular law enforcement handgun in the world. It fires a 9mm round, uses the Glock Safe Action system, has a high capacity magazine, and is very light weight.
Appeal to Survivalists
Glocks in general are all very popular handguns for many reason. They are lighter weight due to their polymer frames, they have a unique Safe Action system, there are many accessories available for them, and they are generally considered to be extremely reliable.