This new A.T.I. GSG-522P pistol fires the .22lr round. It has a 9" barrel with an overall matte black finish. This semi-auto pistol is the latest version clone of the H&K MP5. This pistol has an H&K like receiver with a picatinny railed receiver and an adjustable rear sight. It comes with box, lock, takedown tool, and one 10 round magazine.