Primary Arms Deluxe 30mm Scope Mount - 1.5" Center Height PADLXSM USE: Scope mount for use on 1913 Picatinny mounts and similar "flat-top" mounting platforms. SIZE: Fits 30mm tube scope while providing 2.52 inches of clearance between the rings and 1.5 inches above the rail. RUGGED AND DURABLE: Constructed of aluminum with a durable matte black anodized finish. 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.