The GSG-522 has the established features of MP5-Style-Rifles, but with visual improvements which also meet a better functional purpose. Firstly the better grip of the cocking lever, which is now the same for the standard as well as for the SD-type. Secondly the improved open sights for faster aiming which is more convenient for Target-Shooting. Thirdly the GSG-522 comes with a removable Weaver Rail, which allows the customer to fix an optical device at customer's option. The ergonomically handle with Anti-Slip-Points is re-designed as well as the safety lever. Additionally a loop has been fixed to the trigger guard and the lever of the magazine holder has been widen. To stick to established engineering the GSG-522 got the same motor of the GSG-5 to ensure furthermore the shooting of different sorts of 22 caliber ammunition without any problems. All accessories of the GSG-5 will work on the GSG-522.