UTG Pro AR-15 Carbine Length Drop-in Quad Rail Picatinny 6.67in Handguard Black. You will be pleased with the attention to quality UTG Pro has put into this quad rail. With aircraft aluminum with precision CNC machining the UTG Pro Model 4/15 Carbine Length Quad Rail System will stand up to any demanding situation. UTG Pro Rifle Scope Mounts are built to perform time and time again in difficult tactical environments. Be sure to check out our full selection of Rifle Scope mounts rings and bases for more great parts to enhance your firearm. The UTG Pro Quad Rail MTU001 installs with ease and you don't need to worry about modifying your weapon. This UTG Pro Quad Rail is extremely compatible with both picatinny and weaver style mounts. Specifications for UTG Pro AR15 Carbine Length Drop-in Quad Rail: Manufacturer: UTG Pro Color: Black Finish: Anodized Fabric/Material: Aircraft Grade Aluminum Gun Make: AR Platform Gun Model: AR-15 Gun Type: Rifle Handguard Length: 6.67 in Handguard Type: Drop-In Handguard Style: Quad Rail Gun Rail: Picatinny Gas System Length: Carbine Length Condition: New Included Accessories: Standard Hand: Ambidextrous Quantity: 1 Caliber: .223 Remington 5.56x45mm NATO Features of UTG Pro Model 4/AR15 Carbine Length Drop-in Quad Rail: Clever Top/Bottom Two-piece Design with Integral Spinal Cords/Alignment Housing for Perfect Fit with Barrel Nut and Round Front Cap Made from Aircraft Aluminum with Precision CNC Machining and Excellent Anodizing/Engraving Fits Car. Length Model 4/15 and Provides Four Picatinny Rails Each with 14 Slots Great Zero-retention Capability for All Accessories Installed on the Rails Easy Installation with No Modification to the Barrel Proudly with Superb Design and Production - 922R Compliant Package Contents: UTG Pro AR15 Carbine Length Drop-in Quad Rail Mount Users Manual Allen Wrench Hex Screw Package of 12 Rail Covers UTG Pro MTU001: AR-15 Carbine Length Drop-in Quad Rail Picatinny 6.67in Handguard Black