This is a factory short 10-round magazine for MP5-style GSG-5/522 rimfire firearms.
Heckler & Koch’s iconic MP5 is one of the most popular and successful submachine guns in history—with a proven track record & unique design—and the GSG-5/522 delivers the same finish and feel; with affordable rimfire ammo and trustworthy factory magazines …
These 10-round, German-made factory magazines feature a compact profile, durable polymer construction, easy-to-use reloading button and wide-cut witness slot for keeping an eye on ammo capacity. These magazines work with all models of GSG-5/522, GSG-5PK, and SD models.
Please note that they are NOT compatible with HK Walther/Umarex MP5-A5 or SD models.