American Defense Manufacturing AD-DELTA 20MOA 35mm Dual Ring Scope Mount. The AD-DELTA is a straight up scope mount with no eye relief built in. Optic center line height is 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. NSN 1005-13-121-5535 It features the Patented QD Auto Lock(tm) Lever system to accommodate both in-spec and out-of-spec rail systems. Specifications for American Defense Manufacturing AD-DELTA 20MOA 35mm Dual Ring Scope Mount: Manufacturer: American Defense Manufacturing Fabric/Material: 6061-T6 Aluminum Offset: No in Gun Make: AR Platform FN Herstal Color: Black Distance Between Rings: 3.39 in Tube Diameter: 35 mm Cant: 20 MOA Ring Height: 1.5 in Weight: 9.6 oz Gun Model: AR-15 FN SCAR AR-10 Width: 0.98 in Condition: New Ring Quantity: Pair Finish: Hard Coat Type 3 Mil-Spec Anodize Gun Type: Rifle Quantity: 1 Package Contents: American Defense Manufacturing AD-DELTA 20MOA 35mm Dual Ring Scope Mount What firearm models does the manufacturer say American Defense Manufacturing AD-DELTA 20MOA 35mm Dual Ring Scope Mount is compatible with? The manufacturer says that American Defense Manufacturing AD-DELTA 20MOA 35mm Dual Ring Scope Mount is compatible with AR-15 AR-10 FN SCAR