Leupold steel Quick-Release (QR) rings and bases are designed for effortless optic removal and replacement while maintaining zero within +/- �� MOA. This specific model is crafted for the Steyr SBS Classic Mannlicher, making it an excellent choice for muzzleloaders and large caliber rifles. The QR mounting system utilizes a patented lever mechanism, precisely machined to engage the steel base by pulling the ring down and forward, securely locking it into place. This system allows for quick scope changes, making it ideal for hunters and shooters who travel by air and prefer to remove their scope for transport. Both the 1-piece and 2-piece QR bases are compatible with all QR rings, offering the convenience and field-proven accuracy expected from Leupold mounts. With rugged reliability to match the Leupold optics they secure, these mounts ensure a seamless connection between scope and firearm. Made in the USA and engineered to endure a Lifetime of heavy use, Leupold mounts deliver dependable performance in any shooting scenario.