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Extended 17-round S15 magazine with aluminium +2 extension pre-installed. Steel magazine with premium aluminium extension for Glock 43X/48.

The Shield Arms S15 Gen 3 17rd Magazine (Black Alu +2 Extension Pre-Installed) – Nitrocarb is designed to maximize capacity and performance for Glock 43X and Glock 48 platforms. Combining the proven S15 steel magazine with a precision-machined aluminum +2 extension, this pre-assembled setup delivers 17 rounds of reliable capacity in a compact, easy-to-handle format.

Built with a Nitrocarb-coated steel magazine body, the Shield Arms S15 Gen 3 17rd Magazine (Black Alu +2 Extension Pre-Installed) – Nitrocarb offers excellent durability, corrosion resistance, and consistent feeding performance. The black anodized aluminum extension not only increases capacity but also provides improved grip surface and better control during reloads.

Gen 3 engineering improvements include enhanced feed geometry, optimized spring tension, and a refined follower design to ensure dependable operation across training, competition, and range applications. The Shield Arms S15 Gen 3 17rd Magazine (Black Alu +2 Extension Pre-Installed) – Nitrocarb arrives fully assembled and tested, eliminating the need to install extensions separately and allowing immediate use.

The extended base pad helps protect the magazine during drops while maintaining a practical profile for everyday handling. For shooters seeking the ideal balance between capacity, durability, and control, the Shield Arms S15 Gen 3 17rd Magazine (Black Alu +2 Extension Pre-Installed) – Nitrocarb delivers a complete, ready-to-run solution.

Designed specifically for Glock 43X and Glock 48 pistols, this magazine requires a compatible enhanced magazine release for optimal performance with steel magazines.