The Patent Pending Arisaka Trijicon MRO Mount is designed for the Trijicon MRO optic.The low profile, minimalist design and 7075-T651 aluminum construction with MIL-A-8625 Type III hard coat anodizing ensures strength and durability.The Arisaka Trijicon MRO Mount is available in 1.70" and 1.93" heights, and with black or clear (tan) hard coat anodizing. Why do we offer 1.70"? Many people find this height provides the perfect balance between heads up orientation and enough cheekweld to be consistent, which is evident in the rising popularity of 1.70" scope mounts.Weight:1.70" - 3.0 oz1.93" - 3.1 ozEach mount is CNC machined from 7075-T651 aluminum and MIL-A-8625 Type III hard coat black or clear anodized (clear hard coat with 7075 provides the tan color). Anodizing colors may slightly vary from part to part and batch to batch, and is completely normal. Includes all necessary screws and tools to attach optic to mount. Recommended torque values:Picatinny clamp - 50 inch lbs (5.7 Nm)Optic to mount - 11.9 inch lbs (1.35 Nm)Made in the USA.