The Beretta APX magazine is an easily removable double stack device that allows a rapid reloading of the pistol. It has a capacity of 18 rounds and fits a .40 S& W caliber. Beretta makes a commitment to its customers to deliver the highest quality products in the industry. This magazine shows Beretta follows through on that commitment. Fits APX A0 Full Size, APX A0 Compact, and APX A0 Centurion. Beretta APX 40S& W 18rd Magazine JMAPX1840