Premium High Quality made in Germany ORIGINAL H & K 30mm Rings NEW STYLE. Made specialy for QR – Quick Detach Mount with Lever, fitting receiver of H & K 300 – 05 – SL6 – SL7 – 630 – 770 – 940 – a. Made of high Quality DURAL ALUMINIUM with excellent satin finish. GREAT slightly used ORIGINAL condition, been just ones mounted. For any questions, feel free to ask.