Leupold steel Quick Release (QR) rings and bases facilitate the easy removal and reattachment of your optic to your firearm while maintaining zero within +/- MOA. This particular ring model is compatible with any riflescope featuring a 30mm main tube and is designed to be used in conjunction with our Quick Release bases. It is especially favored for muzzleloaders and large-caliber rifles. The QR mounting system employs a patented lever mechanism, precisely machined to engage the steel base with the ring by pulling it down and forward, securely locking it in place. This user-friendly system allows for the use of multiple scopes on a single rifle, making it an excellent choice for hunters and shooters who travel by air and need to detach their scope from their firearm. Our QR one-piece and two-piece bases are compatible with all QR rings, offering the convenience and field-proven accuracy expected from a mount. The connection between your scope and firearm is of utmost importance, which is why our mounts are as robust and reliable as the Leupold optics they support. With a wide array of mounting systems available, you are certain to find the ideal match for your firearm and shooting style. Manufactured in the USA and guaranteed to withstand a lifetime of use, Leupold mounts are designed to never disappoint.