Works well with my 15rd Glock 23 and 27.40S&W magazines
922788
This magazine holder holds 2 15rd Glock 23 and G27 .40S&W magazines just fine.  The fully loaded magazines sit in there tight and require a decent amount of pull to remove them from the holder.  They aren't terrible bulky, and I can't see how they could be anymore compact given the weight they have to be able to carry.  I've jogged and ran with both magazines seated, and they stayed in there nice and snug.  Hopefully over time this does not change.
644789
I use this with a Smith and Wesson M&P Shield and it works flawlessly.  It also works with a Glock 43.
2801149
the pouch holds the magazines firmly and feels great when worn. it's almost impossible to find magazine holders for my .45 but this definitely does the job. i don't know about rolling around on the ground or going upside down, but that isn't what this mag pouch is designed for.
905533
Great for my 1911 the cant of the holster makes carrying an extended magazine less noticeable
4087139
Great magazine holder.  I have Fobus paddle-style holsters and magazine holders for all my pistols.  Very good design and functions well for me.  S&W M&P Shield owners should be aware that their magazines will NOT fit this Fobus model 4500 - the Shield magazine thickness is just a bit too large to fit this holder.  Works great for 1911 magazines, but NOT for M&P Shield  magazines.
4706089
Bought this to quick load 17 round mags for my Smith and Wesson 5" M&P 2.0 9mm. Works great with the S&W factory mags, not so much with a couple of aftermarket MagPul mags. Think it's the MapPul that's the issue there, but did want to bring it up if you're shooting aftermarket mags.
3336134
Holds extended magazines well, both Glock and Uzi style. Attaches firmly to gear, and is fairy easy to put magazines back in one-handed. 17 round magazines are still too short, but if in a pinch, they would obviously fit, just not held as well. Worth the money, pick up a few.
3212581
A simple and wonderful addition to my Multicam set. These dual pistol mags fit my 1911 magazines snug. They also can hold my Gerber Multi tool well. So far it has held up on training ops well!
3734372
Fits my gen 4 glock 17 double stack mags like a glove great quality too
3433262
Works on my Springfield XD-9mm SubCompact. I have extended mags and factory mags. It fits them both smoothly and I didn't notice any scratching like some other reviews said. If you have a well-used mag with a looser spring, then the thumb tab on the back should be useful to push the loader down easily. However, on tighter springs or newer mags (or near the end of mag capacity) where you need to push harder, it's not very helpful because it's so short.

Also, on tight/new mags for the last few rounds, I found it easier to tip the mag + loader upside down on the carpet (it might scratch counter/wood surfaces) to push from the butt of the magazine down, instead of from the top of the mag down, then I'd hold it in place and flip it upright to load my next one. Things got much quicker when I figured that out. See pics.

I like that it's metal, as it will likely last longer than plastic models. It was lightly oiled right out of the package. Overall it did the trick, it's metal and sturdy, and a good price.
2822040
Awesome light works as advertised my.  Only prob is finding a good duty holster for my glock 22 40S&W. Recommended
1801138
Works with G17 magazines well. Not a "speed" type pouch but does offer security when used as rough service where loss of spare magazines is a possibility.
3706917
I'm taking a tactical handgun class at the end of the month that requires three magazines.  I only have two for my commander-sized 1911 but I have two full-size magazines.  I bought this to fill the need for that class.

The X-Grip fits great on my GI all-metal mags but they don't feed well in my commander, so I switched this to my Wilson Combat mags, which have a wider plastic base.  The X-Grip was tight and firm on the GI magazine, but feels a bit loose or sloppy on those mags with the plastic base.

That being said, they seem to functionally work just fine, they just don't feel as fitted on the Wilson Combat mags I have.
916662
Works great on my Mag's to identify the pistol for each Mag.  I've had it on for a month and the paint did not wear off.  I did do two coats for the magazines so they are easier to see in the safe.
1458356
Worked great with my Taurus .380 and my Smith&Wesson Shield. The description/video talks about the holster accepting full frame weapons. It does, but I will not use this for any full frame weapons. Too bulky and not really comfortable with large frame guns for me. The extra magazine holder that comes with it, is not really functional. The retention strap used does not stay on the magazine. The strap slides off to the side after a few minutes of walking. The extra pocket that is made to the holster however works well and will be used. Due to the large surface area, it does get a little warm after awhile of wearing even in cooler weather. Not enough to be a issue. Have not wore yet in warmer weather, so that might be a different story. Overall great product with little to complain about.
3465598
This is the second item that I bought of this because I like it. My first set is used for my Glock 22 15rd mag which fits great. I bought this for my Glock 27 which comes with a small 9rd mag and this can be adjusted to fit about any size item you want. I do have a plus 1 one each mag which gives them some extra lengthy which is good but being new they are very tight getting them in and out but over time the pouch will loosen up from use. Being able to to snap on to anything you want to put them on is easy as well. If you want a good and easy mag pouch I would go with this.
108724
Solid chunk of metal, works as described. Fits in my KWC 1911 100th anniversary edition.

Plastic head that pushes BBs into the gun can bend forward and not push the BBs upward if you overload it -- so don't put more than 27 rounds in! Leaks a little, but so do all my other mags -- just use plumber's tape on the CO2 cartridge to fix.

Pros:
+Holds 27 rounds
+Solid metal, feels sturdy
+CO2 is held sturdily inside

Cons:
-BB pusher can bend just enough to stop feeding BBs into the gun IF THE MAG IS OVERFILLED - so don't overfill it!
-Can leak, although it can be easily fixed with plumber's tape (also happens on all my other 1911 magazines, so it could be the CO2 cartridges)