Vortex Optics Сantilever Ring Mounts provide the correct height and forward placement for proper scope mounting on flattop. Available for 30mm tubes in 3 inch offset.
Key Features:

• Center Scope Height: 1.59 inches (40.39 mm)
• Weight: 6.75 oz
• Compatibility: Picatinny
• Base Clamp Screws: 20 in/lbs
• Ring Screws: 18 in/lbs
• Material: Aluminum
• Cantilevered for ideal weight distribution and mount orientation
• Built from sturdy aluminum
• Lightweight and efficient
• One-piece construction with mount and two integrated rings