The DDM4 Rail from Daniel Defense is a free-float quad rail handguard engineered for durability, lightweight performance, and enhanced ergonomics on AR-15 platforms. Designed to provide a rigid and stable mounting system, this rail features a four-sided Picatinny configuration at the 12, 3, 6, and 9 o'clock positions, allowing for the attachment of optics, lights, lasers, vertical grips, and other tactical accessories.Built for versatility and reliability, the DDM4 Rail includes integrated limited-rotation QD sling swivel attachment points at the front and rear for ambidextrous sling use. Its free-floating design helps maintain accuracy by minimizing barrel interference, while compatibility with low-profile gas blocks on barrels 11 inches and longer ensures broad application across AR builds. Combining strength, modularity, and proven design, this AR-15 quad rail handguard delivers a dependable solution for tactical and performance-focused rifle setups.