The ProMag SMI40 magazine is a reliable and durable choice for anyone using an M&P Shield EZ. Constructed from high-quality steel this magazine offers a robust structure ensuring longevity and performance. Designed to hold 10 rounds of 9mm ammunition it provides an optimal balance between capacity and size. Whether you're at the range or in a self-defense situation this magazine ensures smooth and consistent feeding making it an excellent addition to your gear.