Glock 43 +2 Magazine Extension for OEM Mags

Adds 2 rounds to a factory Glock 43 magazine, taking it from 6 to 8. Billet 6061 aluminum with an easy-access floor plate, in six anodized colors. Fits factory magazines only.
SKU: G43-ME-2
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Availability: In stock
$39.95
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Buy now, pay later Available at checkout on orders over $150
Compatibility

Fits Factory Glock® 43 Magazines Only

This extension replaces the base plate on a factory Glock® 43 magazine. It doesn't fit Shield Arms Z-Series magazines, aftermarket magazines, or Glock® 43X and 48 magazines. For the 43X and 48, see our S15 magazine.

What Is the Shield Arms Glock® 43 +2 Magazine Extension?

It's a billet aluminum base plate extension that adds 2 rounds to a factory Glock® 43 magazine, taking it from 6 rounds of 9mm to 8. It keeps your factory magazine and factory mag catch, has an easy-access floor plate for cleaning without removing the extension, and comes in six anodized colors. Machined in Bigfork, Montana, with a lifetime warranty and Spring for Life.

  • Adds: 2 rounds (factory 43 mag from 6 to 8)
  • Fits: factory Glock® 43 magazines only
  • Material: billet 6061 aluminum, Type II anodized
  • Colors: Black, Red, Grey, Mud, ODA Green or Gold
Glock® 43 +2

Eight Rounds From the Mags You Already Own.

The Glock® 43 carries slim because its magazine holds six. This extension adds two more without changing anything else: same factory magazine, same factory catch, same pistol.

Swap the base plate, and a 6-round magazine becomes an 8-round magazine. A common setup is a flush factory mag in the pistol and an 8-rounder as the reload. Want more than eight? Our Z-Series steel magazines go to 12.

8 Rounds in a factory 43 mag
+2 No new mag catch needed
6 Anodized colors
USA Machined in Bigfork, MT
Features

Machined From Billet, Built to Service

  • Easy-Access Floor Plate

    Reach the spring and follower for cleaning or service without taking the extension off the magazine.

  • Index Cuts

    Cuts on the extension body give you a better grip when you pull the magazine from a pouch.

  • Keeps Your Factory Catch

    It goes on the factory polymer magazine, so the pistol's factory mag catch stays as it is.

  • Billet 6061 Aluminum

    Machined from billet aluminum in Bigfork, Montana, and finished in Type II anodize.

Glock® 43 Capacity

Six, Eight or More.

This extension takes a factory magazine from 6 to 8. For more, the Z-Series steel magazines hold 8 flush in the Z8, 9 in the Z9 and up to 12 with the Z9 +3. Z-Series mags run on a Shield Arms steel mag catch.

Capacity laws vary by state and city. Check yours before you buy.

Glock® 43Factory mag   6 Glock® 43 +2This extension     8 Z8Flush, steel   8 Z9Steel   9 Z9 +3Extension    12   Magazine   Added by extension
Installation

Replaces the Factory Base Plate

Remove the factory base plate and install the extension on the magazine body. Follow the included instructions for safe, correct installation, and find step-by-step help on our installation guides page. Nothing on the pistol changes.

Install Guide Z-Series Mags
Compare

More Rounds in a Glock® 43

Keep your factory magazines with this extension, or step up to Z-Series steel magazines for more capacity.

Option Magazine Steel Catch Rounds
Glock® 43 +2 Extension (this page) Factory — 8
Z8 Magazine Steel, flush ✓ 8
Z9 Magazine Steel ✓ 9
Z9 +1 Pre-Installed Steel ✓ 10

New to the Z-Series? The Z9 Starter Kit includes the steel catch. See the Z-Series.

Specifications

Adds 2 rounds of 9mm (factory Glock® 43 magazine from 6 to 8)
Fits Factory Glock® 43 magazines only
Doesn't fit Shield Arms Z-Series (Z8, Z9), aftermarket magazines, Glock® 43X / 48 magazines
Mag catch Factory Glock® catch; no change needed
Included Installation instructions
Material Billet 6061 aluminum
Finish Type II anodized: Black, Red, Grey, Mud, ODA Green or Gold
Floor plate Easy access, no need to remove the extension for cleaning
Grip Index cuts for pulling from a pouch
Made in Bigfork, Montana, USA
Warranty Lifetime warranty plus Spring for Life

Six Anodized Colors

Every color is Type II anodized over billet 6061 aluminum. Pick yours from the Mag Extension Color menu.

ODA Green was first made for a deployed Special Forces Operational Detachment Alpha team. We still offer it in honor of Special Forces teams around the world and donate a portion of every ODA Green sale to the Green Beret Foundation.

Mud: our Mud anodize shade changed slightly in 2025. Mud items bought before then may not be an exact match to the current shade.

Black Red Grey Mud ODA Green Gold
Questions

Glock® 43 +2 Extension FAQ

Which magazines does it fit?

Factory Glock® 43 magazines only. It takes a 6-round factory magazine to 8.

Does it fit Z-Series magazines?

No. The Z8 and Z9 have their own extensions: the Z9 +1 and Z9 +3.

Does it fit the Glock® 43X or 48?

No. The 43X and 48 use a different magazine. For those, see our S15 magazine.

Do I need a new mag catch?

No. The extension goes on your factory polymer magazine, so the factory catch stays.

How do I install it?

Remove the factory base plate and install the extension, following the included instructions. Step-by-step help is on our installation guides page.

Do I have to remove it to clean the magazine?

No. The easy-access floor plate opens to the spring and follower with the extension still on the magazine.

Can I get more than 8 rounds?

Not with a factory magazine. Our Z-Series steel magazines hold 8 flush (Z8), 9 (Z9) and up to 12 with an extension. They run on a Shield Arms steel catch; the Z9 Starter Kit includes one.

What's ODA Green?

A green anodized finish first made for a deployed Special Forces team. A portion of every ODA Green sale goes to the Green Beret Foundation.

What's covered?

A lifetime warranty against defects in materials and workmanship, plus free replacement springs through Spring for Life.

Related

More for Your Glock®

Z9 Starter Kit Z9 plus a steel catch Z8 Magazine 8 rounds, flush Z9 Magazine 9 rounds, pinky length Glock® 26 Extension For the subcompact Glock® 19 Extension For the compact All Mag Extensions Glock, CZ, SIG, S&W, Springfield

See every extension on the mag extensions page.

ODA Green

Used on: magazine extensions, magwells

ODA's (Operational Detachment Alpha) are the boots on the ground operational teams of a Special Forces Group. This color began as a special run for a deployed ODA. In continued support we have decided to continue the color as a standard offering and donate a portion of the proceeds to The Green Beret Foundation. Finish is anodized in green.

QPQ Nitrocarburizing Surface Treatment

Used on: magazines, barrels, slides

QPQ Nitrocarburizing is a type of surface treatment used to enhance the durability and corrosion resistance of metal parts. The process involves heating the metal in a controlled environment, where nitrogen and carbon are introduced to the surface of the metal. This forms a thin layer of a hard compound called "nitrides," which increase the surface hardness of the metal.

During the QPQ Nitrocarburizing process, the metal is immersed in a special salt bath and heated to high temperatures. The salt bath contains a mixture of chemicals that release nitrogen and carbon, which penetrate the surface of the metal. The process is carefully controlled to ensure that the nitrogen and carbon penetrate to a specific depth, creating a uniform layer of nitrides on the metal's surface.

The resulting nitride layer provides many benefits to the metal parts, including increased hardness, wear resistance, and corrosion resistance. This treatment helps to increase the lifespan and durability of metal parts, making them more reliable and long-lasting.

Any “scuffing” you see in the surface finish is completely normal, and will not affect the durability or corrosion resistance of the steel.

Electroless Nickel Plating

Used on: magazines

Silver electroless plating offers superior electrical conductivity and corrosion protection with excellent deposit uniformity and adhesion properties. This bright, reflective finish provides outstanding solderability and contact resistance while maintaining the consistent thickness and coverage that electroless plating processes are known for. Black electroless nickel plating provides these same exceptional deposit properties - including lubricity, hardness, and corrosion resistance - but with a fully conductive and uniform black surface finish that combines superior performance with an attractive dark appearance.

This item is controlled for export by the International Traffic in Arms Regulations (ITAR). Please check your state and local laws regarding magazine capacity restrictions.

Freedom Restricted States

If you live in a state that restricts magazine capacity we cannot ship to you unless you are law enforcement or otherwise exempt. If you are exempt from your state's ban please send us a copy of your documentation or official email to [email protected]. Please include your order number.

If you purchase from a ban state and you are NOT exempt, we will cancel your order and charge you a 5% cancellation fee.

Notice

GLOCK® is a federally registered trademark of GLOCK, Inc. and is one of many trademarks owned by GLOCK, Inc. and GLOCK Ges.m.b.H.  Neither Shield Arms nor this site are affiliated in any manner with, or otherwise endorsed by GLOCK, Inc. or GLOCK Ges.m.b.H.  The use of "GLOCK" on this and associated pages on our website is merely to advertise the sale of GLOCK® pistols, parts, or components. For additional genuine GLOCK, Inc. and GLOCK Ges.m.b.H products and parts, visit www.glock.com.

Products specifications
Firearms Manufacturer Glock
Firearms Model Glock 43
Installation Help

Not sure how to install this product? Our step-by-step guides and video walkthroughs make it simple.

View Installation Guides →
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