Works well - BlackHawk Double Mag Cases

I used two of these to hold four spare mags during speed shooting. They worked very well. You can adjust the tension to your liking. The hold mags firmly in place, yet allow quick mag draw and insert w/o looking. My only minor complaint is that it was a little difficult to thread my double-layer belt through the loops, especially where there was Velcro on the belt because that made the belt even thicker. But since these mag cases also come with hooked belt clips, I can just clip them over my belt rather than thread the belt through the belt loops. The hooked belt clips are adjustable, grip the belt very well, and keep the mag cases from sliding around. The tight belt loops probably wouldn't be an issue if you have a thinner or single-layer belt, not that it's that big of an issue to begin with.
Pros: Adjustable tension, belt clip

This review was written in the old system and had content requirements that are different than reviews written today.