This new ATI GSG-5PK pistol fires the .22lr round. It has a 4 1/2" threaded barrel with an overall matte black finish. This semi-auto pistol is an H & K MP5 clone. This pistol comes with tool kit, hardcase, flash hider, manual, and 1 10 round magazine. Hi capacity magazines are available. This gun is on sale due to it having a broken hardcase.