Desantis storm packer a must-have if you own a beretta cx-4 storm! - DeSantis Storm Packer Magazine Pouch

Not advertised but it is adjustable for different-length magazines & comes with a tool to do it (basically a wooden tongue depressor just like your doctor uses). It will adjust to fit mags from the factory 15 round to the Mec-Gar (or Beretta) 20 round. Unfortunately, it will NOT adjust long enough to accomodate the Beretta 30 round magazines, but I don't believe you could operate the rifle if you had those in the Storm Packer anyway. I wish DeSantis would offer the OD Green and Camo versions of this pouch anywhere except on Beretta's website (they're close to $50 on there shipped) but the black is fine. The only drawback to this pouch is it blocks off use of the CX-4's side sling attachment points. The bottom swivel-type sling attachment is still accessible. One plus: I'm glad to see the mag pouch flap has a button-type closure instead of noisy Velcro. The quality is outstanding. Overall, I'm very pleased with this product and would definately purchase it again.