Contessa 40mm Picatinny Mount Black 20 MOA. For tactical and competition rifles designed to guarantee the best performance. Specifications for Contessa Fixed Picatinny Mounts: Manufacturer: Contessa Gun Rail: Picatinny Fabric/Material: Hardened Steel Color: Black Condition: New Co-Witness: No Gun Type: Rifle Quantity: 1 Features of Contessa Fixed Picatinny Mounts Fixed Mount w/30/34/40mm/1in Rings 0 MOA/20 MOA Package Contents: Contessa Fixed Picatinny Mounts Contessa SBTFX01/20: 40mm Picatinny Mount Black 20 MOA