The ETS Polymer Magazine for Glock 21, 30, and 41 in .45 ACP delivers reliable, durable ammunition storage for one of the most trusted platforms in the shooting world. Built from advanced polymer instead of traditional steel or aluminum, ETS mags offer serious advantages for hunters, competitive shooters, and anyone running a .45 ACP Glock: they're lighter, easier on your gear, and won't rust or corrode like metal alternatives. Whether you're stocking up for a range day, building redundancy for a duty setup, or just want affordable, proven backup magazines, the ETS option gives you flexibility in capacity and proven reliability at the range or in the field.

ETS engineered these mags to handle real-world abuse. The translucent polymer body lets you see your round count and ammunition type at a glance—no guessing when you need a reload. The specially designed base plate disassembles easily for cleaning and maintenance, and the ergonomic floor plate grabs smoothly out of mag pouches even when you're moving fast. The feed lips and body are creep-resistant, so they won't spread or shift even if a magazine sits fully loaded in storage for months. Drop resistance is legitimate: these won't crack or shatter like cheaper polymers can, and they shrug off harsh chemicals, extreme cold, heat, and UV exposure without becoming brittle.

Available in 9, 13, 18, or 30-round capacities, you can mix and match to fit your mission—compact carry setups, full-size duty rigs, or competition stages. The ETS base is also engineered to play nice with most popular Glock magazine extensions, so you can customize capacity and ergonomics to suit your grip and shooting style.

Key Features

• Durable advanced polymer construction resists impact, chemicals, extreme temperatures, and UV degradation
• Translucent design shows round count and ammunition type for quick inventory
• Creep-resistant feed lips and body maintain reliable geometry even when fully loaded long-term
• Ergonomic floor plate designed for fast, secure extraction from magazine pouches
• Easy-to-field disassembly base plate for field cleaning and maintenance
• Compatible with most common Glock magazine extensions for customization
• Lifetime warranty coverage

Specifications

Firearm Compatibility	Glock 21, 30, 41
Caliber	.45 ACP
Capacity Options	9, 13, 18, or 30 rounds
Material	Advanced polymer
Base Plate Type	Easy-disassembly design
Warranty	Lifetime

Frequently Asked Questions

Which Glock .45 ACP models does this magazine fit?

The ETS Polymer Magazine is designed for the Glock 21, 30, and 41—the three standard .45 ACP Glock platforms.

Can I use Glock magazine extensions with the ETS base?

Yes. The ETS base plate is specifically engineered to be compatible with the wide variety of aftermarket Glock magazine extensions available, so you can extend capacity or adjust ergonomics to your preference.

What capacity options are available?

ETS offers this magazine in 9, 13, 18, and 30-round capacities, so you can select the configuration that best suits your use case—from compact carry to full-power competition or training setups.

Can I see how many rounds are loaded?

Yes. The translucent polymer body allows you to visually inspect your round count and ammunition type without removing the magazine from your pouch or gear.