The GSG-522 has the established features of MP5-Style-Rifles, but with visual improvements which also meet a better functional purpose. First the better grip of the cocking lever, second the improved open sights for faster aiming, and third 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 are redesigned as well as the safety lever.