Blackhawk's CF Double Row Mag Case is built for long-lasting durability. It supports a variety of 9 mm and . 40 cal magazines and operates on a built-in tension spring. The spring adapts to fit multiple magazine sizes, keeps magazines securely in place and allows for rapid access when needed. There is a removable belt clip for accommodating duty belt or tactical belt attachment. The casing is ultra-durable and protects mags from damage and impact. It also can be attached to a drop-leg platform or to a shoulder harness for added convenience. For a lightweight, versatile magazine case, this one delivers.