The Warne Scope Mounts S&W M&P 9/40 magazine extension is a must-have upgrade for firearm enthusiasts seeking enhanced performance and capacity. Designed specifically to fit the S&W M&P 9/40, this blue magazine extension offers a significant capacity boost, adding +5 rounds for 9mm and +4 rounds for .40 caliber, making it an ideal choice for those who demand more from their magazines. The Warne M&P 9/40 mag extension not only increases your firearm's capacity but also enhances its overall functionality, providing a seamless and reliable shooting experience. Crafted with precision and durability in mind, this high-capacity mag extension is perfect for competitive shooting, self-defense, or any situation where additional rounds are crucial. The sleek blue finish not only adds a touch of style but also ensures that the extension is easily identifiable, making it a practical addition to your firearm accessories. With its easy installation process, the Warne blue mag extension allows you to quickly upgrade your S&W M&P 9/40 without any hassle. Whether you're a professional shooter or a firearm enthusiast, this S&W M&P 9/40 mag upgrade is designed to meet your needs, offering both reliability and increased firepower. The Warne Scope Mounts S&W M&P 9/40 high capacity mag is a testament to quality and innovation, ensuring that you have the best possible performance when it matters most. With a UPC of 656813108145 and MPN 3312, this magazine extension is a valuable addition to any firearm collection, providing the perfect balance of capacity, style, and functionality.