Maxima Quick Detach Rings are the most durable and versatile quick detachable mounting system available. Each ring is precision CNC machined from sintered steel technology. When used on the all steel Warne Maxima bases, we guarantee accuracy of within 1/1000th of an inch when removing and reattaching the optics. The recoil control key guarantees the position of the rings will not shift or move under fierce recoil and also protects against peening or swaging when mounted on aluminum bases.Instructions: Remove the 4 screws from both rings. Place the scope in the ring halves and re-insert recoil key. Start all 4 screws on both rings and tighten bottom screws to 25 in/lb* max. Place rings onto the bases with the recoil keys in the slots. Push each ring towards the muzzle to seat the recoil key and tighten QD lever, thumb & forefinger tight. (there is no need to over tighten QD lever) Adjust eye relief and level the reticle. Once both are correct, tighten the top screws on both rings to 25 in/lb* max. *After tightening, pull QD levers out to index them to the desired position..