This is another handgun developed for the FBI. The M stands for - modified, as it contains all of the standard Gen 5 features like a straight front grip area, flared magwell, nDLC finish, and also the Glock Marksman barrel. According to the FBI standards, this pistol includes Ameriglo Agent Night Sights, the ambidextrous slide stop lever is extended, and the magazine catch is rounded and has a special ‘FBI style’. Even though it’s a kind of police gun, it is also very popular amongst civilians, especially in the US. Another thing that should be mentioned is that this pistol has an innovative ‘Safe Action’ trigger mechanism which makes it very safe, simple, and fast to utilize.