BlackHawk's Carbon Fiber mag pouch has a built in tension spring, to hold your magazine in place until you need it and to allow the use of a variety of magazines in each pouch. This single stack magazine pouch works with all caliber single column mags, from 9mm to .45 caliber. The double stack magazine pouch will take all 9mm and .40 caliber staggered column magazines, including polymer body designs.
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