Shield Arms' New 20-Round Flush Fit Mags For Glock 17

Published on January 20, 2026
Duration: 2:42

This video from Classic Firearms at SHOT Show 2024 introduces Shield Arms' new DS20 and DS18 magazines for Glock pistols. These steel magazines offer increased capacity (20 rounds for Glock 17, 18 for Glock 19) while maintaining a flush-fit profile. A crucial point highlighted is the necessity of a steel magazine catch to prevent wear on standard polymer or aluminum catches caused by the steel magazine body. A prototype flared magwell for Gen 6 Glocks is also shown.

Quick Summary

Shield Arms offers the DS20 (20-round) and DS18 (18-round) steel magazines for Glock 17 and Glock 19 platforms, respectively. These magazines maintain a flush-fit profile but require a steel magazine catch to prevent excessive wear on standard polymer or aluminum catches.

Chapters

  1. 00:00Introduction at SHOT Show 2024
  2. 00:31DS Series Magazine Overview
  3. 01:11Reliability and Magazine Catch Requirements
  4. 02:01Gen 6 Magwell and Pricing

Frequently Asked Questions

What are the new Shield Arms magazines for Glock?

Shield Arms has released the DS20, a 20-round magazine for Glock 17 frames, and the DS18, an 18-round magazine for Glock 19 frames. Both maintain a flush-fit profile and are constructed from steel.

Why do Shield Arms steel magazines require a steel magazine catch?

The steel body of Shield Arms magazines can cause significant wear on standard Glock polymer or aluminum magazine catches over time. Using a steel magazine catch ensures durability and prevents premature failure of the catch mechanism.

What is the capacity of the Shield Arms DS20 magazine?

The Shield Arms DS20 magazine holds 20 rounds of 9mm ammunition and is designed to fit Glock 17-sized pistols while maintaining a flush profile with the firearm's frame.

Are Shield Arms magazines compatible with all Glock models?

The DS20 is designed for Glock 17 and similar full-size frames, while the DS18 is for Glock 19 and similar compact frames. Compatibility with specific generations or models like the Glock 43X (which uses the S15 system) should be verified, and a steel magazine catch is mandatory.

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