The APX Centurion pistol extends the proven APX Series to a mid-size duty or concealed carry size. It features a 15+1 (9mm) flush fit magazine that it shares with the Full size variant. As with all APX pistols, the APX Centurion has been designed specifically for military and law enforcement users who have a need for a smaller pistol with similar handling characteristics to their duty pistols.

The APX Centurion features an end user removable serialized chassis and can be easily modified with replaceable grip frame housings. Controllability and ergonomics are an APX focus: Low bore axis, ambidextrous slide catch, reversible magazine release, aggressive slide serrations, and a trigger that breaks at 6 lbs with a clear tactile and audible short reset.