Nice mag carrier. - Safariland 123 Concealment Magazine Holder, Horizontal - Plain Black, Ambidextrous 123-383-2

This is a great idea. Very light,compact and comfortable to wear. Not exactly fitted to any particular magazines, kind of a generic fit. Both my single and double stack 9mm Sig magazines fit OK. 1911 mags will fit too. Slides around a little between belt loops...not always a bad thing. Works on shoulder straps as well as belts. Retention strap is wide and holds firmly...great for hiking or back-packing...magazine is not falling out. But the strap is slow and not for tactical speed loads. The Velcro gets worked hard on this carrier and I really can't see a long life. I would suggest getting the belt loop fitting where you want it and then thread carrier on and off to save wear on the Velcro.

All and all I like it. Nice way to pack an extra magazine. Compared to other holster/belt/carrier items out there it seems a little over priced.