Cloak Industries 150 Round 5.56x45mm NATO Cloth Nutsac Black. 56 ammo belt holder. Holds up to 150 rounds of linked 5.56. Compatible with the M249 and other firearms using the traditional M249 style ammo box retaining clip. Includes a required AR-15 magwell adapter to be utilized with the MFR56. Specifications for Cloak Industries 150 Round 5.56x45mm NATO Cloth Nutsac: Manufacturer: Cloak Industries Color: Black Fabric/Material: Polymer/Nylon Number of Rounds: 150 Size: 0.5 lb Dimensions: 11x6x4 in Caliber: 5.56x45mm NATO .223 Remington Package Contents: Cloak Industries 150 Round 5.56x45mm NATO Cloth Nutsac Magazine well adapter for AR-15s Cloak Industries CLK-150-BFNS: 150 Round 5.56x45mm NATO Cloth Nutsac Black