Pistol version of the GSG-5 rifle. The new GSG-5 .22 caliber semi-auto rifle from American Tactical Imports is an exact replica of the H&K MP5 sub-machine gun aside from the caliber. Ergonomics and handling are identical to that of the MP5. 22 long rifle offers an immense savings over 9mm/40/45 caliber ammunition allowing extensive range time with the GSG-5 at a minimal cost to the user. The GSG-5 utilizes either a 22 or 10 rd detachable box magazine that releases with an H&K style paddle magazine release. The charging handle on the GSG-5 is located on the left side of the receiver and is non-reciprocating just like the H&K MP5 series. The GSG-5 utilizes the H&K style Drum sight that is windage and elevation adjustable. Accessories available for the GSG-5 include a claw mount with picatinny rail allowing just about any optic from a tactical or hunting scope to a Close Quarters Battle optic like a red dot sight to be mounted on the receiver. In addition to extra magazines ATI also offers a tactical magazine coupler for joining 2 magazines together making for a faster reload. The Pistol comes with a 10rnd magazine, cleaning kit, and manual.