A compact 9mm pistol is a semi-automatic pistol with a barrel length of less than 4 inches and a magazine capacity of 10 or more rounds. Compact 9mm pistols are popular for concealed carry because they are small and lightweight, yet still offer good firepower.
Compact 9mm pistols have a number of advantages over other types of concealed carry guns. First, they are relatively easy to conceal. Second, they offer good firepower, with most models holding at least 10 rounds of ammunition. Third, they are relatively inexpensive, making them a good option for budget-minded shooters.