When it comes time to mount your favorite Leupold scope on your favorite rifle why not use original Leupold QRW scope rings. Designed to mount to any Weaver/Picatinny style mount or rails these rings are an excellent choice. The Leupold QRW rings are machined from solid steel. These rings offer you similar features as the permanent attach type however you have the benefit of the quick release knob. Again this ring will mount to any Leupold QRW base or any other Weaver/Picatinny style rail. Don't get stuck using some other brand, stick with Leupold for all your optics and optics mounting needs.