Aero Precision Ultralight 34mm Scope Mount Extended FDE. This scope mount is designed to fit AR type upper receivers with Mil-Spec 1913 Picatinny rails and features a cross-slot keyway that offers excellent recoil protection. Our Ultralight Scope Mounts free you from unnecessary bulk providing one of the lightest mounts in the industry. Specifications for Aero Precision Ultralight 34mm Extended Scope Mount: Manufacturer: Aero Precision Fabric/Material: 6061-T6 Aluminum Gun Make: AR Platform Base/Mount Type: Cantilever Ring mount Tube Diameter: 34 mm Ring Height: 34 mm Weight: 4 oz Gun Model: Universal Condition: New Country of Origin: USA Gun Type: Rifle Quantity: 1 Features of Aero Precision Ultralight 34mm Extended Scope Mount Designed for AR type upper receivers Screw Torque - 15 in-lbs Package Contents: Aero Precision Ultralight 34mm Extended Scope Mount What firearm models does the manufacturer say Aero Precision Ultralight 34mm Extended Scope Mount is compatible with? The manufacturer suggests that Aero Precision Ultralight 34mm Extended Scope Mount is compatible with UniversalAero Precision APRA211212: Ultralight 34mm Scope Mount Extended FDE