USED TRYBE Optics 30mm Offset Ring Mount Black TRO30MMOSR. This mount allows you to mount anything with a 30mm tube 28mm (1.1 inches) from the center of your picatinny rail. The center of the ring 23mm above the top of the picatinny rail. This is made from 6061 T6 Aluminum and will last for years JOIN. THE. TRYBE Specifications for TRYBE Optics 30mm Offset Ring Mounts: Manufacturer: TRYBE Optics Fabric/Material: 6061-T6 Aluminum Color: Black Height: 23 mm Tube Diameter: 30 mm Offset: 28 mm Gun Make: AR Platform Gun Rail: Picatinny Ring Height: 23 mm Gun Type: Rifle Quantity: 1 Gun Model: AR-15 Package Contents: TRYBE Optics 30mm Offset Ring Mounts TRYBE Warranty TRYBE products are made for performance and durability and are covered by a comprehensive warranty depending on the type of product. See full warranty information here What firearm models does the manufacturer say TRYBE Optics 30mm Offset Ring Mounts is compatible with? The manufacturer suggests that TRYBE Optics 30mm Offset Ring Mounts is compatible with AR-15TRYBE Optics TRO30MMOSR: 30mm Offset Ring Mount Black