The Beretta APX grip is sold with two additional backstraps, offering both thin and large size options for a customized fit. Its unique modular chassis system allows users to replace or reconfigure the grip frame, including changing sizes and colors, without modifying or damaging the firearm. This modular design also makes customization, such as stippling, less risky since the frame can be easily swapped. Additionally, the ability to break the gun down into its basic subcomponents simplifies maintenance and upkeep for APX owners.