Primary Arms Deluxe Extended 1" Scope Mount - 1.5" Center Height PADLXSMEXT1 IDEAL FOR VARIABLE POWER OPTICS: For "nose to charging handle" position on 1913 Picatinny mounting and similar platforms. 1 INCH TUBE: For 1-4x and 1-6x scopes with 1-inch tubes. RUGGED AND DURABLE: Aluminum construction with a durable matte black anodized finish. PLACEMENT: Places the center of your 30mm tube scope 1.5 inches above the rail. If a defect due to materials, workmanship, or normal wear and tear has caused your product to malfunction, Primary Arms will either repair or replace.