12-Round Magazine Upgrade for M&P Shield – MPS-12

MPS-12 – Magazine Extension for S&W M&P Shield (Upgrades 8-Round Mag to 12-Round)

The MPS-12 is a high-performance magazine extension that upgrades your S&W M&P Shield 9mm 8-round magazine to a 12-round full-capacity magazine. Featuring an innovative spring plate design, it seamlessly integrates with your original factory magazine spring, eliminating the need for additional parts or modifications.

🔹 Key Features:
✔ +4 Round Capacity Upgrade – Expands the original 8-round magazine to 12 rounds.
✔ No Spring Replacement Required – Works with the original factory magazine spring.
✔ Ergonomic Grip Enhancement – Contoured finger indents provide a secure, controlled grip.
✔ Easy Installation – No gunsmithing required, user-friendly installation.
✔ Durable & Lightweight – Constructed from fiberglass-reinforced polymer for maximum durability.

🔹 Compatibility:
✔ Smith & Wesson M&P9 Shield 8-round factory extended magazine (9mm only)