You probably expected to see the Glock on this list, right? The Glock is easily one of the most popular home defense pistols on the market today. It’s a very simple and reliable gun that also offers a lot of firepower. While the standard capacity on the Glock 17 is 17 rounds, you can also get 33 round extended magazines to further increase your firepower as well. Take note that there are also Glock pistols available in a wide variety of other calibers, such as the Glock 22 in .40 S&W and the Glock 21 in .45 ACP.