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Key Features
- 20-round capacity - +3 rounds over Glock OEM magazines
- Near-OEM footprint - Minimal size increase for concealment
- Over-insertion stop - First aftermarket Glock mag with this feature
- Premium steel construction - Built for reliability and durability
- Made in USA - Manufactured in Bigfork, Montana
Compatible With
- Glock 17
- Glock 34
- Glock 45
- Glock 47
- Glock 19X
- Glock 19
- Glock 26
Maximum Capacity in a Compact Package
The Shield Arms DS20 magazine revolutionizes aftermarket Glock 17 magazines by delivering 20 rounds of 9mm ammunition in nearly the same footprint as factory 17-round Glock magazines. This breakthrough design gives Glock 17 owners +3 rounds of additional capacity without the bulk typically associated with extended magazines.
Whether you carry your Glock 17 for concealed carry, home defense, duty use, or competitive shooting, the DS-20 provides crucial extra capacity while maintaining the compact profile that makes the Glock 17 one of the most popular handguns in the world.
Engineering Excellence: Over-Insertion Stop Technology
Shield Arms brings OEM-level over-insertion protection to aftermarket Glock magazines with the DS-20's integrated over-insertion stop.
Why the Over-Insertion Stop Matters
The over-insertion stop is a critical reliability feature that:
- Ensures proper seating depth - Prevents the magazine from being inserted too far into the magazine well
- Eliminates feeding malfunctions - Maintains correct ammunition presentation to the feed ramp
- Provides consistent lockup - Ensures the magazine catch engages properly every time
- Delivers OEM reliability - Functions with the same mechanical precision as Glock factory magazines
