Daniel Defense Omega Rail 9.0 Mid-Length. The Omega Rail is a free float rail system that allows the individual operator install it with the Allen Wrench provided and requires ZERO modification to the weapon The Omega Rail features an integral QD sling swivel mount with rotation limiter and an uninterrupted upper rail platform. This light weight rail system is meticulously CNC machined from Aircraft Grade Aluminum and is Military Specification Type III Hard Coat Anodized. All the Omega Rail fasteners are military specification. The Omega Rail 7.0 is designed to work with carbine-length AR15 gas systems and its exceptionally light weight makes it perfect for short rifles where size and weight are crucial performance attributes. The Omega Rail 9.0 is designed to work with Mid-Length AR15 gas systems. Specifications for Daniel Defense AR-15 Omega Rail: Manufacturer: Daniel Defense Color: Black Finish: Type III Hard Coat Anodized Fabric/Material: Aircraft Grade Aluminum Gun Make: AR Platform Gun Model: AR-15 Gun Type: Rifle Handguard Type: Free-Float Handguard Style: Quad Rail Gun Rail: Picatinny Included Accessories: Standard Inner Diameter: 1.08 in Caliber: 5.56x45mm NATO .223 Remington Hand: Ambidextrous Quantity: 1 Width: 1.9 in Features of Daniel Defense AR-15 Omega Rail: Light weight; User installed with no special tools; Zero modification to host weapon; Uninterrupted upper rail platform; Oval shape to feel like traditional hand guard; Integral QD sling swivel mounts with Limited Rotation Feature; Mil-spec fasteners Package Contents: Daniel Defense AR-15 Omega Rail Daniel Defense Warranty: Guaranteed Satisfaction All Daniel Defense products carry a 100percent satisfaction guarantee against defects in original materials and workmanship. If your Daniel Defense product shows evidence of such defects Daniel Defense will make every accommodation to fix repair or replace your product in the most expeditious manner possible. Daniel Defense does not warranty products or damage caused to our products by the correct or incorrect installation of other manufacturer's products. Warranty information and warranties are supplied solely by the manufacturer and not this retailer. This retailer publishes information from the manufacturer for information purposes only and the manufacturer is solely responsible and liable for any warranty information and warranties published by this retailer. Please reference the appropriate manufacturer documents or reach out to the manufacturer directly for full warranty terms and effective dates. Daniel Defense Omega Rail 9.0 Mid-Length