American Defense Manufacturing Dual Ring scope Mount 30mm 30mm Rings Black AD-DELTA 30 STD-TL. The AD-DELTA-30 is a straight up scope mount with no eye relief built in but does have 30 MOA built in. Top rail to scope center line height is 1.475" for 1" rings and 1.5" for 30mm Rings. It is precision machined from 6061 T6 aluminum and finished in hard coat T3 Mil-Spec anodize. Horizontal rings. Adapted to the FN SCAR program; approved by SOCOM. It features the Patented QD Auto Lock Lever system to accommodate both in spec and out of spec rail systems. Specifications for American Defense Manufacturing AD-Delta 30 Dual Ring Scope Mount: Manufacturer: American Defense Manufacturing Tube Diameter: 30 mm Additional Features: Titanium Lever Condition: New Package Contents: American Defense Manufacturing AD-Delta 30 Dual Ring Scope Mount American Defense Manufacturing AD-DELTA 30 STD-TL: Dual Ring scope Mount 30mm 30mm Rings Black