Warne 3126 Magazine Extension for Glock 19/23 - 6061-T6 Aluminum, Hardcoat Anodized Black, +5 Rounds 9mm / +4 Rounds .40 S&W

The Warne 3126 magazine extension for Glock 19/23 pistols adds real capacity where it counts—five extra rounds in 9mm, or four in .40 S&W—without the bulk or complexity of carrying a second magazine. Built from 6061-T6 aluminum and finished with hardcoat anodize, this extension transforms your carry or duty mag into a practical reload option that feels as durable as the gun itself. Machined in the USA, it's built to handle the rigors of the range, training classes, and defensive carry.

The ergonomic design matters here. Finger grooves give you positive purchase when you need to strip the magazine from your pistol under stress, and the shape works with your hand geometry rather than against it. The Torx head screw and washer secure everything in place without fuss, so you're not troubleshooting retention problems at the range.

If you shoot Glocks in production divisions, carry a 19/23, or just want more round count without shuffling mags between guns, this extension delivers the extra insurance without the learning curve. It's the kind of practical upgrade that makes sense the moment you hold it—no gimmicks, no compromise, just more ammunition on the gun when seconds matter.

Key Features

• Adds 5 rounds (9mm) or 4 rounds (.40 S&W) to Glock 19/23 magazines
• Machined 6061-T6 aluminum for lightweight strength
• Hardcoat anodized black finish resists abrasion and corrosion
• Ergonomic finger grooves for secure grip and positive magazine removal
• Torx head screw and washer ensure reliable retention
• Made in the USA

Specifications

Frequently Asked Questions

Will this magazine extension fit my Glock 19 or 23?

Yes. The Warne 3126 is designed specifically for Glock 19 and 23 pistols. Double-check your slide serials if you're unsure of your model.

How many extra rounds does it add?

The extension adds 5 rounds to standard 9mm magazines, or 4 rounds to .40 S&W magazines.

Is the anodize finish durable?

Yes. Hardcoat anodize is a Type 2 finish designed to resist abrasion and corrosion from regular use, sweat, and holster wear.

Can I remove the magazine easily if I need to?

The finger grooves are designed to help you grip and strip the magazine from your pistol when needed, even under stress. The screw and washer hold everything in place without compromising removal.