Shield Arms builds this S15 Gen 3 magazine (part no. S15-STARTERKIT-G3) for the Glock 43X and Glock 48, chambered in 9mm Luger and holding a patent-pending, flush-fitting 15-round capacity in black steel. It’s the same overall length as the factory Glock 10-round magazine while holding 5 additional rounds. The Gen 3 update is US-manufactured with modular tooling, and raised ribs on the back of the magazine match the OEM magazine position in the well, reducing tolerance-stacking issues caused by frame variations. For Shield Arms owners of a Glock 43X or 48, this handgun magazine is a flush-fit, high-capacity upgrade.

Key Specifications

• Chambered in 9mm Luger.
• Holds 15 rounds, 5 more than the factory 10-round magazine.
• Fits the Glock 43X and Glock 48.
• Built from steel in a black finish.
• Flush-fitting, matching the factory magazine’s overall length.
• Manufactured in the US using modular tooling.
• Features raised ribs that match OEM magazine positioning.
• Reduces tolerance-stacking issues from frame variations.
• A patent-pending Gen 3 design.
• Manufactured by Shield Arms.

Frequently Asked Questions

What pistols does this magazine fit? The Glock 43X and Glock 48, chambered in 9mm Luger.

Does it change the pistol’s overall length? No, it’s the same length as the factory 10-round magazine while holding 5 more rounds.

Buy the Shield Arms S15 Magazine

A flush-fit steel spare that adds 5 rounds without adding length, this Shield Arms S15 Gen 3 is a proven upgrade for the Glock 43X/48. Order it from our Lubbock, Texas gun shop for fast, insured shipping.