Aker 107 FlatSider XR7 Shoulder Holster. Aker 107 Shoulder Holster Double Magazine. Fits Heckler & Koch USP 9 Compact. Heckler & Koch USP 40. NEW W/O PACKAGE PICTURES ARE OF THE ACTUAL ITEM. Heckler & Koch USP 9 Compact. Heckler & Koch USP 40 Compact. NOTE: Not compatible with red dot optics. THANK YOU FOR LOOKING AND HAVE A NICE DAY.