Some shooters just prefer a .45. The Glock 21 gives them a full-size polymer pistol that holds a double-stack magazine of that cartridge, with a grip that fills a large hand. This used example comes with two magazines and its factory box.

The 21 is a classic duty-size pistol, and many agencies adopted it when they wanted a larger caliber. It is heavier than a 9mm and the grip is wide, which is worth knowing before you buy. People with small hands sometimes prefer the SF version, but those with larger hands will find the standard grip comfortable and steady.

Recoil in a .45 is more of a push than a snap, and the Glock design tames it well. Ammunition costs more than 9mm, so it helps to budget for range time. If you enjoy the challenge of mastering a bigger cartridge, the extra effort pays off.

For a used pistol, check the slide and barrel for wear and make sure the magazines seat and lock the slide back on empty. Look down the bore with a bright light. A clean bore and unmarred feed ramp tell you a lot about how the previous owner treated the gun. The pistol is sold as described, in used condition. It ships to your FFL dealer, where the background check is completed.