Glockmeister Tech Tips - Magazine Extensions
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Each newsletter we will provide tips from our senior GLOCK armorers focusing on the performance and maintenance of GLOCK pistols.

This week we take a closer look at Magazine Extensions; their differences, function, and how the use of them can improve your shooting.
Commonly referred to as "plus" or "pinky" extensions, the main function of magazine extensions is to extend the length of the magazine. Some will add capacity to your magazine, others will simply provide you with an area to place your fingers, and others will perform both of these functions. Please note that we will be referencing standard capacity magazines. Plus extensions will NOT work on 10 round restricted magazines.

Full Size and Compact Pistols

The most common type of magazine extensions found for full and compact size pistols are designed to add capacity to the magazine. These "plus" extensions will usually add 2-3 rounds to the capacity of the magazine depending on the caliber.

One thing to keep in mind when adding plus extensions to full size and compact magazines is the magazine spring. In certain circumstances you may need to replace your factory magazine spring with an extra power magazine spring. These springs provide the magazine with the extra power needed to support the increase in capacity and feed the pistol properly. The age of the magazine and magazine spring are the biggest determining factors regarding whether or not an extra power magazine spring are needed. If you add a plus extension and you start to experience failures, the likely cause is a weak magazine spring.


Sub-Compact Pistols

Due to the size of the frame on GLOCK sub-compact pistols, most people are unable to grip the pistol with their pinky and/or ring fingers. Depending on who you talk to, this is either a positive or negative aspect of the sub-compact pistols. The positive is that this gives the pistol a lower profile for concealed carry; the negative is that most shooters would prefer a full grip on the pistol for their comfort. Magazine extensions remedy this problem while still retaining the low profile of the pistol.

Magazine extensions for sub-compact pistols come in a wide variety of shapes and sizes. They are available with the option of adding capacity or simply providing a space for your fingers to grip. Depending which option you choose, some will feel different than others and some will increase the length of the magazine more than others.

GLOCK sub-compact pistol magazines come equipped with extra power springs from the factory. Therefore, unless your magazine springs are years old or weak you should not have to replace them when adding extensions.


Floor Plate Removal

The following diagram is an explanation of how to dissassemble GLOCK magazines. Keep in mind that all work performed to GLOCK pistols should be performed by a Certified GLOCK Armorer. Although this may seem very simple, removing the floor plate can be extremely difficult. If you order a new magazine with extension from us online we will install the extension for you at no extra charge. Also, both of our retail stores offer free installation of mag extensions.
This will cover removing the floor plate from newer fully metal lined magazines ONLY. If you have an older style non metal lined magazine, it is recommended that you purchase a newer style magazine. You will need a GLOCK Dissassembly tool as shown in Figure 1.

To remove the floor plate with the magazine insert, insert the disassembly tool into the hole in the floor plate 1-2 inches (as shown in figure 2 above), push the insert down, pry against the mag spring inside the mag (levering off the floor plate - Figure 3) and now remove the floor plate. As soon as the floor plate starts to move, reposition your hand so your thumb retains the magazine spring (figure 4). Remove the floor plate, magazine spring and follower.


CAUTION: The magazine spring is under tension. Be sure to maintain downward pressure on magazine spring with your thumb while disassembling.
 
Interested in adding extensions to your magazines? We have you covered! Check out our selection of popular GLOCK mag extensions!

Pearce

PG-43

This extension replaces the magazine floor plate adding approximately 3/4" additional length resulting in better control and comfort without altering the capacity of the factory magazine.
 

$9

Purchase Here

GLOCK

Plus Extension

The GLOCK plus magazine extension is compatible on magazines for 9, .40, and .357 caliber GLOCK models. Adds 2 rounds to 9mm magazines and 1 to .40SW and 357sig magazines.

 

$12

Purchase Here

Pearce

PG-G4 Plus

This unit adds capacity to Generation 4 Sub-Compact, Mid, and Full Size Glock high capacity magazines. This magazine extension replaces the original floor plate and internal locking plate and adds two rounds to a 9mm, two rounds to a 40SW and 357SIG, and one round to a 45GAP magazine.
 

$9

Purchase Here

Pearce

PG-26

This extension is perfect for those looking to get a better purchase on their Glock 26, 27, 33, or 39 without adding capacity and keeping the smallest profile. The PG-26 gives users a better grip without adding bulk.
 

$9

Purchase Here

Pearce

PG-19

Are the Glock 19, 23, 32, and 37 grips just a little to short for your hand? This extension solves this problem by adding a place for your pinkie to rest. These extensions also include a piece that can be used on older Generation 2 and 3 Glocks to fill the void from the half moon cutout on the front strap (shown on the right).
 

$9

Purchase Here

Pearce

PG-42 Plus 1

This extension will give users an extra round of capacity while also giving them 3/4” additional grip length. This extension also incorporates the Generation 4 grip texture.
 

$9

Purchase Here

Ghost

MINI-MED Extension

The Ghost MINI-MED Extension adds 2 rounds to Glock 42 magazines. It also acts as a finger rest allowing for a full grip on the pistol. Includes extra power spring.


 

$19.95

Purchase Here

Pearce

PG-GP Plus

The Pearce PG-GP plus extension matches the Glock Generation 3 grip texture. It will add 3 rounds to 9mm magazines, 2 rounds to 40SW/357 SIG magazines, and 1 round to 45 GAP magazines. It is recommended for use with full size and compact models.

 

$9

Purchase Here

Pearce

PG-26XL - PG-26G4

The PG-26XL and PG-26G4 are designed to give users the ultimate grip on their Glock 26, 27, 33, and 39. These extensions are larger than the PG-26 and are available in either Generation 3 or Generation 4 grip texture.
 

$9

Purchase Here

Glockmeister

10/45 Plus Extension

In need of some serious firepower? Our very own Glockmeister 10/45 Plus Extensions will allow G20, G21, G29 and G30 (9 round) magazines to hold 2 more rounds.




 

$12

Purchase Here
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