The ProMag SMI27 Standard 8rd 9mm Luger magazine is an excellent option for Smith & Wesson M&P Shield owners who demand reliability and performance from their firearm accessories. Constructed from heat-treated blued steel, this magazine not only boasts impressive durability but also features a blued finish that enhances its resistance to wear and corrosion, ensuring it remains a dependable companion during both personal defense and recreational shooting. With a capacity of 8 rounds, the SMI27 is designed to provide ample firepower while maintaining a seamless fit and function within the S&W M&P Shield. The incorporation of ProMag's proprietary TECHNAPOLYMER and an anti-fatigue spring allows users to keep the magazine loaded and ready for up to six years without concerns about spring degradation, making it an ideal choice for those who prioritize readiness. Manufactured in Phoenix, Arizona, the SMI27 is tailored to meet the needs of discerning firearm enthusiasts, delivering consistent performance and peace of mind. Whether you are at the range or in a critical situation, the ProMag SMI27 magazine stands out as a reliable and functional addition to your shooting gear.