The Shellback Tactical Double Stacker Open Top M4 Mag Pouch is the perfect modular solution to access four of your M4 magazines quickly and easily. This extremely durable pouch is constructed of lightweight 500 denier nylon. The pouch is engineered to hold four 30 round M4 magazines in a double row double stacked formation. Fully Molle compatible, this pouch features four button snap webbing straps to secure it to any plate carrier, tactical backpack or battle belt with PALS webbing.