The Shield Arms G19ME5RED magazine extension for Glock 19/23 handguns is a purpose-built capacity booster for shooters who want more rounds on tap without changing platforms. If you run a Glock 19 in 9mm, this extension adds 5 rounds to your magazine; Glock 23 .40 S&W users get 4 additional rounds. It's machined from billet 6061 aluminum with Type 2 anodizing, so it's built to last through serious use—and Shield Arms backs that with a lifetime warranty.
The real innovation here is the easy-access floor plate design. You can service the magazine spring and follower without disassembling the extension from the magazine body, keeping you shooting longer and maintaining gear faster. Index cuts on the extension body give you better grip purchase when drawing mags from a pouch, and the red anodize finish makes your magazines unmistakable on a crowded bench or in the field. The extension ships with a +10% power spring engineered to handle the additional capacity.
This Glock magazine extension fits OEM Glock 13 and 15-round magazines only and plays nicely with most aftermarket flared mag wells, so you'll keep your existing holster and carry setups running. Made in the USA, it's the kind of no-fuss upgrade that competitive shooters, defensive carriers, and hunters appreciate—more ammo, same gun, proven engineering.
| Brand | Shield Arms |
| Model | G19ME5RED |
| Compatible Pistols | Glock 19, Glock 23 |
| Capacity Increase (9mm) | +5 rounds |
| Capacity Increase (.40 S&W) | +4 rounds |
| Material | Billet 6061 aluminum |
| Finish | Type 2 anodized red |
| Compatible Magazines | OEM Glock 13 and 15-round magazines only |
| Included Spring | +10% power spring |
| Warranty | 100% lifetime warranty |
| Made In | USA |
Yes. The Shield Arms G19ME5RED extension fits Glock 19 and Glock 23 handguns. It adds 5 rounds to 9mm Glock 19 magazines and 4 rounds to .40 S&W Glock 23 magazines. It works with OEM Glock 13 and 15-round magazines only.
No. The extension is sold separately; you'll use it with your existing OEM Glock magazine. The spring included with the extension is the only additional component you receive.
The extension is designed to fit most aftermarket flared mag wells, so your existing holster setup should work. However, holster and pouch compatibility varies; verify with your holster maker or test fit before relying on it for carry.
Shield Arms offers a 100% lifetime warranty on this extension, plus their Spring for Life guarantee on the included spring. Refer to Shield Arms' warranty terms for full coverage details.
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