This MecGar 17-round magazine is designed specifically for the S&W 5900 Series ensuring a seamless fit and reliable performance. Crafted from durable carbon steel with a sleek nickel finish it offers both strength and style. The magazine accommodates 9mm Luger rounds making it a practical choice for those who prioritize capacity and efficiency. Compatible with the 659 model this detachable magazine is a valuable addition to your shooting gear delivering consistent feeding and enhanced durability.