Leupold steel Quick-Release (QR) rings and bases provide a seamless solution for easily removing and reattaching your optic while maintaining zero (+/- 1/4 MOA). This specific model is designed for the T/C Contender and is a popular choice for muzzle loaders and large caliber rifles. The QR mounting system features a patented lever mechanism, precision-machined to ensure a secure connection between the steel base and the ring. By pulling the lever down and forward, the system locks firmly into place, allowing for quick transitions between multiple scopes on a single rifle. This functionality is particularly advantageous for hunters and shooters who travel by air and prefer the convenience of detaching their scope for transport. Our QR 1-piece and 2-piece bases are compatible with all QR rings, providing the reliability and field-proven accuracy you expect from Leupold mounts. The connection between your scope and firearm is crucial, which is why our mounts are designed to be as rugged and dependable as the optics they support. With a wide variety of mounting systems available, you're sure to find the perfect match for your firearm and shooting style. Proudly made in the USA, Leupold mounts are built to withstand a lifetime of rigorous use, ensuring they will never let you down when it counts. Enhance your optics setup with Leupold QR rings and bases for exceptional reliability and versatility.