UTG Pro M4 Carbine Length Quad Rail System, RIS, Black

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 Made in USA with Superb Design and Production Black Rubber Rail Guards IncludedLength: 6.5"