Shield Arms S15 Gen 3 15rd Magazine 9mm for Glock 43X/48

The Shield Arms S15 Gen 3 is a patent‑pending, flush‑fitting steel magazine designed to increase the capacity of Glock 43X and Glock 48 pistols. It provides a 50% capacity increase while maintaining the same overall length as the OEM Glock 10‑round magazine. Construction and finish emphasize durability and corrosion resistance for regular use at the range or in everyday carry configurations.

Gen 3 improvements include new U.S.-based manufacturing, updated tooling, raised rear ribs to better align the magazine in the mag well, and an upgraded steel and coating process with QPQ nitrocarburizing for enhanced surface hardness and corrosion resistance.

Key Specifications

• The magazine holds 15 rounds of 9mm Luger.
• The material is steel for durable service life.
• The finish is a QPQ nitrocarburized (nitride) coating for corrosion resistance.
• Designed to fit Glock 43X and Glock 48 pistols.
• The overall length matches the OEM Glock 10‑round magazine for a flush fit.
• Features an easy-to-remove, impact‑resistant base pad for maintenance and handling.
• Requires Shield Arms steel mag catch for optimal reliability with this magazine design.
• Made in the USA and covered by Shield Arms’ stated warranty and spring program.

Built to expand capacity without changing your pistol’s footprint, the S15 Gen 3 provides a practical capacity upgrade for range sessions and everyday carry where a flush‑fitting magazine is preferred. Its steel construction and nitrocarburized finish focus on longevity and consistent function, while the Gen 3 refinements improve fit and interchangeability in production Glock pistols.

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