A&G is most likely what you'll see folks around here recommend.

 

The best extension that you can buy is a G19 mag!
If not the only I recommend is the Glock 7151+ factory original.

 

I have the GAP floorplates and I also use the Pearce PG-2733.

The GAP floorplate is perfect if you want to preserve the standard two finger grip and length. It provides a solid anchor and locks you into firing grip when drawing it.

The Pearce PG-2733 adds a pinky extension, solid grip, and an extra round. On top of that, it's the only extension I've seen that looks like it belongs on the mag. Since it's colder weather, I'm carrying the G26 with a Pearce extended mag in it, and a spare. When it warms back up, I'll carry it with the GAP floorplate mag in it.

 

Not sure if it's the best, but I have a G26 and bought a few of the "mag sleeves" from Glockstore.com and really like them.
They have them for different size mags.
(I got the ones that fit 15 round G19 mags)

http://glockstore.com/pgroup_descrip/3_Magazines+&+Extensions/6759_Magazine+Sleeve+for+Glock/

 

Here's the G26 with the GAP and Pearce PG-2733, respectively.

 

I have the Pearce +2 on all my 26 mags. Diffenitly worth it.

 

I also highly recommend the GAP floorplates. I tried most the magazine extensions and love the GAP.

 

if you want to just add the pinky spot and not take away from the size of the pistol, get the pearce pg26, or pg26xl...do a google for pearce grip, and you can find their website....i dont personally like extensions that add rounds, as they can be unreliable, and putting a 19 mag in there just makes the 26 more like a 19, in which case, why not just get a 19...i have both sizes, a 27 and a 23, and the 27 is soo much better to use as my ccw...

 

Here is my Glock 26, in a modified Glock holster, with a Pearce PG-39 which adds 3 cartridges. There is no appreciable gap and it has never pinched my hand. I use it all the time. I usually can only get an extra two cartridges in it.
It's worth noting that it adds very little to the printing, since the pistol is pointing down when IWB.
Sonnytoo

 

GAP provides a solid grip while preserving concealment.

 

Here is a video on the GAP finger ext. Don


http://www.youtube.com/watch?v=qDyW1WuzONk

 

+1 For the Pearce. I've had several on my G27 and loved them.

 

I have gap plates. *Tony the Tiger Voice* they're GRRRRRREAT! However "pinkie extention" wise I don't think Glock OEM +2's can be beat! I have several mags that came with them already installed! No pinch and they are UBER RELIABLE!

 

After trying everyone on the market, I finally settled on the stock 12rd GLOCK factory mag.

Works for me.

 

Years ago I tried the pearce for my 27. Still too small. The Scherer fit my large hands much better.

 

The best Glock 26 grip extension is called "Glock 19".

 

Well said. The grip is the most difficult part to conceal. If you're going to add +2 extensions, why not just carry a superior gun in the G19?

 

Another vote for the GAP. Does not add length and gives a perfect grip, at least for my medium hands.

 

i like the PG-2733's and the GAP plates.

you can't go wrong with either, however the PG do add slightly more bulk to the bottom of the gun.

 

I like Glock factory 7151 (+) on my 2.5 gen smooth grip G-27, on my G-26 its the Pearce XL or (+) baseplates because the checkering matches the frame, the Scherer extensions have oversize checkering on the rests like some sort of steroid extensions.

 

If your looking to put a G19 mag in the G26 the A&G is your best bet, I saw a guy place grip tape on the A&G part to help the grip.

 

if you want to just add the pinky spot and not take away from the size of the pistol, get the pearce pg26, or pg26xl...do a google for pearce grip, and you can find their website....i dont personally like extensions that add rounds, as they can be unreliable, and putting a 19 mag in there just makes the 26 more like a 19, in which case, why not just get a 19...i have both sizes, a 27 and a 23, and the 27 is soo much better to use as my ccw...

I have heard this many times about the + extensions. I even considered it when I ordered mine, which is why I have the GAP floorplates too. I've since put about 500 rounds through my 26 so far, and no less than 400 of them were fed through two mags with Pearce PG-2733's on them. Not a single FTF. I trust them just as much as I'd trust the stock 10 rounders.

My buddy, who carries a G19, hated my 26 with stock mags. He couldn't get over the grip. With the PG-2733's, he wishes he'd bought one instead of a G19.

 

I actually like the looks of the GAP floor plates for ccw.

I also use my Glock 26 as my open carry gun in WI which is why I'd like longer magazines.

 

The best extension that you can buy is a G19 mag!
If not the only I recommend is the Glock 7151+ factory original.

+1
For me, the best is the original Glock (7151): the quality of plastic, the same color to the frame, and also add 2 cartridges capacity.
Greetings from Spain.

 

You don't need your pinky on the grip to shoot the gun accurately. If you buy a gun for concealment, don't ruin it by making it less concealable. If you're worried about firepower, carry some 17 mags for backup.