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The very last thing you need is your magazine running dry when faced with a real emergency! However, you can eliminate this issue by adding a Herrington Arms’ Glock mag extension for models 17, 19, and 26.

It will help you increase your trigger time, so you won’t have to reload anytime soon. This extension can increase the G19’s original 15+1 capacity by an additional two rounds so your Glock 19 carry weapon rivals the firepower of the Glock 17 without the added size. Similarly, Glocks 17 and 26 will also benefit from an increase in their respective capacities.

The extension is too small to affect the concealability of your EDC weapon. Moreover, It's so light it can barely be felt, so it won’t affect the fine balance of your Glock. At the same time, it is extremely durable since it has been constructed of weapon-grade 6061 aluminum. This component is precisely CNC machined to make sure that it will work flawlessly, whenever you squeeze the trigger.

Key Advantages of the Herrington Arms’ Glock Magazine Extension

  • This +2 Mag extension will give you that extra edge just when you need it the most!
  • Uses OEM mags and baseplates
  • Available in a non-glare black hard anodized matt finish
  • Constructed with 6061 aircraft-grade aluminum
  • Extremely rugged and durable
  • Very lightweight so it doesn’t affect the balance of your weapon
  • Lifetime warranty. No questions asked!

It is available in a non-glare, triple hard coat anodized finish. This matt scratch-resistant finish will enhance the aesthetic appeal of your Glock. It is rugged enough to survive even if it falls on hard surfaces without cracking or losing its structural integrity. In fact, it has been thoroughly checked by being dropped multiple times to ensure that it doesn’t fail in any situation.

It can be installed within minutes since it uses OEM springs. This makes it versatile enough to offer seamless compatibility with multiple Glock models. This Glock mag extension works exclusively with factory Glock magazines and doesn’t require a visit to a gunsmith for installation.

 It sits so close to the magwell that there is virtually no difference in the length of the grip and doesn’t decrease the concealability of the weapon. Best of all, it comes with a lifetime warranty. If at any time you are dissatisfied with this product, you may avail a full ‘no questions asked’ refund or get it replaced free of cost.


Product Specifications

  • Material: 6061 Aluminum
  • Capacity: +2
  • Finish: Black
  • Compatibility: G17, G19, and G26 models

The 9x19 cartridge is an extremely popular self-defense round that is used by police departments and militaries all over the world. The Glock pistol is the ideal weapon for this caliber due to its inherent reliability, simplicity, shooting comfort, and high capacity. The Herrington Arms Glock Extension will increase your factory Glock magazine capacity by an extra two rounds. This way, you will never feel outgunned in any situation!


DISCLAIMER: This product is not manufactured, authorized, endorsed,
or warranted by GLOCK. GLOCK does not warrant or represent that
this product is compatible with GLOCK pistols.


Every compensator we manufacture has undergone rigorous reliability testing!

The design phase

Every product we make goes through a week long design process and multiple versions before we machine a prototype!

CNC Machining

We currently machine all of our compensators on 2 brand new Doosan DNM4500S CNC milling machines and a 2019 Tormach 1000mx CNC milling machine!


The answer is easy! All you need to do is purchase the threaded barrel that matches your slide. For example, if you have a carry length slide you need a carry length threaded barrel (4.6"). If you have an X compact slide you need a X compact threaded barrel (4.3"). This will allow you to run a longer frame and give you an integrated look.


Yes they do. We have run tens of thousand of rounds through all of our models and have had zero malfunstions. If you are having an issue with a build, it is likely the case you have installed our prodcut incoretly or your handgun needs broken in. Compensators need a smooth running system to be reliable. A new handgun has tolerances that need to be worn in before we suggest adding a compensator

-It's easy! We designed our comps to be self-timing so all you have to do is

- Remove your slide from you frame

- Remove your guide rod assembly

- Apply Loctite to barrel threads

- Thread comp onto barrel until it stops

- Back off a 1/8 turn

- Apply Loctite to set screws

- Tighten down set screws


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Damon B.
United States

Simply the best

This is best mag extension out there. Simple, minimalist, sleek, sexy, install was easy, works and looks good with Steel City Arsenal magwell. I plan to buy more when I get the in stock notification.

Jerin K.
United States United States


This thing looks and feels bombproof right out of the package. Big a big fan of HA since they first came into the market


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