Glock 19/23 – Magazine Extension – +5/+4 Capacity – Shield Arms
PLEASE DOUBLE CHECK DETAILS AND FITMENT BEFORE PURCHASE.
Shield Arms makes this aluminum magazine extension for the Glock 19/23 magazine family, giving compact-frame shooters a real capacity bump without turning the pistol into a jam experiment. It is built as a baseplate replacement and is aimed at guys who want more rounds, better reload handling, and clean fitment.
Available options are organized below under Variants. Verified color options from your batch are Black, Gold, Gray, ODA Green, and Red.
Fitment
- Fits Glock 19 and 23 magazine pattern setups
- Adds +5 rounds to Glock 19 9mm magazines
- Adds +4 rounds to Glock 23 .40 S&W magazines
Does NOT fit
- Does not fit Glock 17/22/34/35/19X/45 magazine bodies
- Does not fit Glock 26/27 magazine bodies
What it does
This extension increases usable capacity while also adding a larger gripping surface at the bottom of the magazine for reloads and handling.
Why it’s worth it
You get aluminum construction, anodized finish, and the kind of capacity gain people actually buy mag extensions for in the first place. Shield Arms also calls out lifetime support, which is nice because broken gear has a nasty habit of showing up at the worst time.
Specs
- Material: Aluminum
- Finish type: Anodized
- Capacity increase: +5 rounds for 9mm / +4 rounds for .40 S&W
- Verified fit family: Glock 19, 23
- Verified color variants in this batch: Black, Gold, Gray, ODA Green, Red
- Made in USA
What’s included
- Shield Arms magazine extension
- Required extension components for installation
Tools needed
You’ll want a Glock magazine tool or similar baseplate removal tool to make the swap easier.
Install notes
Install it correctly, then test function with your exact magazine body, ammo, and pistol before trusting it for carry or match use.
Verify before you buy
Verify you are buying for Glock 19/23 magazine fitment. This is not the extension for the Glock 17/22 full-size family and it is not for Glock 26/27 subcompact mags.
⚠ Glock Disclaimer
IronKells Armory LLC is not affiliated with, endorsed by, or sponsored by Glock, Inc. or Glock Ges.m.b.H.
All references to GLOCK® are used solely to identify firearm models, parts compatibility, and fitment information for customers. Glock is a federally registered trademark of Glock, Inc. and Glock Ges.m.b.H.
Any product sold on this site referencing Glock is aftermarket, not OEM, and is not manufactured by Glock. Glock does not warranty, authorize, or guarantee the performance, safety, or reliability of any third-party components or modifications.
Firearm parts should be installed by a qualified armorer or gunsmith. Improper installation, modification, or use of aftermarket components may affect firearm safety, reliability, and void manufacturer warranties. By purchasing and installing third-party parts, the buyer assumes all responsibility for safe handling, installation, function testing, and use of their firearm and accessories.
Buyer is responsible for compliance with all local/state laws regarding magazine capacity.
