Z9 Magazine with +1 Pre-Installed Extension for Glock 43

A Shield Arms Z9 steel magazine with the +1 extension and plus-power spring installed: 10 rounds in your Glock® 43, ready to load. Requires a Z-Series steel mag catch.
SKU: Z9-ME-1INS
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Availability: In stock
$69.50
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Buy now, pay later Available at checkout on orders over $150
Compatibility

Fits the Glock® 43. Runs With a Steel Mag Catch.

This is a complete Z9 magazine with the +1 extension already installed, for the single-stack Glock® 43. The Z9 is steel and isn't built to run on the polymer catch the pistol ships with, so install our Standard or Premium Z-Series steel catch, sold separately. Running a Glock® 43X or 48? See the S-Series.

What Is the Z9 +1 Pre-Installed?

The Z9 +1 Pre-Installed is a Shield Arms Z9 steel magazine with our billet aluminum +1 extension and 12-coil plus-power spring already installed. It holds 10 rounds of 9mm in a Glock® 43, four more than the 6-round factory magazine, and it's ready to load out of the box. It runs with a Shield Arms Z-Series steel mag catch and is made in the USA with a lifetime warranty and Spring for Life.

  • Capacity: 10 rounds of 9mm
  • Fits: Glock® 43
  • Requires: a Shield Arms Z-Series steel mag catch
  • Colors: six anodized extension colors
Ready to Load

A 10-Round Glock® 43 Mag, Out of the Box.

The Z9 puts nine rounds in a Glock® 43 at the length of a factory mag with a pinky extension. Add our +1 extension and it holds ten, with very little added length.

This version comes assembled. The Z9, the billet extension and the plus-power spring are installed together, so there are no base pads to swap and no springs to change. Load it and carry it, as your everyday mag or as the reload behind a flush Z8.

10 Rounds of 9mm
+4 Over the factory 6
6 Extension colors
USA Made, with Spring for Life
Features

Magazine and Extension, Assembled

  • Z9 Steel Magazine

    Heat-treated steel body with a Powercron finish. Thin steel walls are where the extra rounds come from.

  • Billet +1 Extension

    Machined from billet 6061 aluminum in Bigfork, Montana. Type II anodized, with index cuts for pulling from a pouch.

  • Plus-Power Spring

    A 12-coil plus-power spring, installed and sized for the added round.

  • Easy-Access Floor Plate

    Open the floor plate to clean or service the magazine without taking the extension off.

Z9 Capacity

Nine, Ten or Twelve.

Run the Z9 as it comes, carry this +1 Pre-Installed for 10, or add the +3 for 12. Every option runs on the same steel catch.

Already own Z9s? The Z9 +1 Extension is sold on its own. Capacity laws vary by state and city. Check yours before you buy.

Glock® 43Factory mag   6 Z9Standard pad   9 Z9 +1This magazine    10 Z9 +3Extension    12   Magazine   Added by extension
Required

Run It With a Steel Mag Catch

The Z9 is steel and the catch your Glock® 43 shipped with is polymer. We build the Z-Series to run steel on steel, with our Standard or Premium Z-Series catch, both made in the USA. The Premium sticks out slightly further for an easier reach and engages the magazine slightly more. Either way it's a one-time install, and our installation guides walk you through it. Another manufacturer's catch may cause reliability issues.

Standard Catch Premium Catch

Specifications

Capacity 10 rounds, 9mm (Z9 + 1)
Compatible pistol Glock® 43
Magazine Shield Arms Z9, heat-treated steel, Powercron finish
Extension Z9 +1, pre-installed
Spring 12-coil plus-power spring, installed
Extension material Billet 6061 aluminum
Extension 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
Mag catch Shield Arms Z-Series steel catch required (Standard or Premium), sold separately
Made in USA; extension machined in Bigfork, Montana
Warranty Lifetime warranty plus Spring for Life

Six Anodized Colors

The extension comes in six Type II anodized colors over billet 6061 aluminum. The Z9 body is Powercron. Pick your extension color from the 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

Z9 +1 Pre-Installed FAQ

Is the magazine included?

Yes. This is a complete Z9 magazine with the +1 extension and plus-power spring installed. Already own Z9s? Buy the Z9 +1 Extension on its own.

Do I need anything else to run it?

Yes, a Shield Arms Z-Series steel mag catch, sold separately. Need a catch and magazines? The Z9 Starter Kit, Dual Mag Kit and Z9 Combo 1 include one.

Which pistols does it fit?

The single-stack Glock® 43. For the Glock® 43X and 48, see the S-Series.

Do I have to remove the extension to clean it?

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

+1 or +3?

The +1 holds 10 and adds the least length, which makes it a natural carry mag. The +3 holds 12 and makes a strong reload.

Will my factory 6-round mags still work?

They'll run with the steel catch, but we don't recommend it for regular use. Steel on polymer adds wear to the magazine over time.

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 is Spring for Life?

Free replacement magazine springs for as long as you own it. See the program.

What's covered?

A lifetime warranty against defects in materials and workmanship, plus Spring for Life.

Related

More for Your Glock® 43

Standard Z-Series Catch Steel, made in the USA Premium Z-Series Catch Easier reach, more engagement Z9 +1 Extension For Z9s you own Z9 +3 Extension 12 rounds Z8 Magazine 8 rounds, flush Z9 Starter Kit Z9 plus a steel catch

See the whole lineup on the Z-Series 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.

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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