Designed specifically for military and law enforcement operators, the APX has been put through extensive testing and evaluation at the professional end user level. The result is a pistol that delivers superior performance in durability and reliability, ergonomics, trigger, and modularity. Utilizing a removable, serialized chassis frame, the APX can be easily modified with replaceable grip frame housings and is simple to disassemble and maintain. Each APX comes with three interchangeable backstraps so users can best fit their hands and preferences. It has aggressive full length slide serrations making slide manipulations easy under any conditions. To accommodate right- or left-handed use, the APX's magazine release button can be easily reversed, and the slide stop is ambidextrous. The APX's trigger breaks at 6 lbs. and has a clear tactile and audible very short reset.