The single stack 9mm market consists of the Glock 43 9mm, Springfield XD, and Smith and Wesson Shield, and similar pistols. A new player has introduced a pistol based on sound engineering that just might be the best pistol for your use. Mossberg isn’t a new maker, but it is a new maker in the compact 9mm market. This is Mossberg’s first handgun in nearly 100 years.