It gets a little confusing ... a Glock 45 is not a .45, but a 9 mm pistol that was born out of the U.S. Army's MHS pistol trials. To clear it all up, American Rifleman’s Joe Kurtenbach was offered an early look at the new Glock 45, and does a great job of walking through this gun's evolution. Though at first glance the pistol simply resembles a black Glock 19X, there are a few more subtle differences than at first meet the eye. For more, check out this 2019 SHOT Show primer.