Shield Arms S15 Magazine +5 Extension

The Shield Arms S15 Magazine +5 Extension is the ultimate high-capacity upgrade for your Glock 43X and 48, delivering 20+1 rounds in a compact, reliable package. Built around the S15 Gen 3 all-steel magazine, this mag comes pre-installed with a +5 aluminum baseplate, combining increased firepower with unmatched durability.

Unlike factory polymer magazines, the S15 steel magazine provides enhanced strength and longevity, ensuring consistent feeding and flawless function under high-stress conditions. The +5 extension is precision-machined from aircraft-grade aluminum, offering a lightweight yet rugged solution for shooters who demand more rounds without sacrificing concealability. The textured baseplate design enhances grip and control, making reloads faster and more efficient.

Designed as a drop-in, no-modification upgrade, this 20-round steel magazine seamlessly fits the Glock 43X and 48, making it ideal for concealed carry, home defense, training, and competition. With Shield Arms’ mag catch compatibility, the S15 +5 mag ensures secure lock-up and reliable feeding, even during rapid-fire engagements.

Key Features & Benefits:

✔ 20-round total capacity – S15 steel magazine with pre-installed +5 baseplate
✔ Durable all-steel construction – Stronger than polymer mags for extended reliability
✔ Precision-machined aluminum +5 extension – Lightweight, impact-resistant, and built to last
✔ Textured extended baseplate – Improves grip, control, and reload speed
✔ Optimized for Glock 43X & 48 – Designed for seamless function with Shield Arms mag catch
✔ Drop-in installation – No modifications required, ready to use out of the box

Whether you’re a concealed carrier, competitive shooter, or home defender, the Shield Arms S15 Magazine +5 Extension gives you the extra capacity and reliability you need—without adding bulk.