Magpul Industries Mag Assist 308 Win Fits AR Rifles 3 Pack Flat Dark Earth. Durable synthetic rubber loop with recessed rough gripping surface. Quick and easy installation and removal. Patented design based upon the tried and true para-cord loops and duct-tape tabs currently in use with special warfare units worldwide. Specifications for Magpul Industries Original Magazine Base Extension - 7.62 NATO 3 Pack: Manufacturer: Magpul Industries Fabric/Material: Durable synthetic rubber Condition: New Quantity: 3 Package Contents: Magpul Industries Original Magazine Base Extension - 7.62 NATO 3 Pack Magpul Industries MAG002FDE: Mag Assist 308 Win Fits AR Rifles 3 Pack Flat Dark Earth