The Rock Island STK100 17-round magazine is a robust accessory designed for the STK100 model. Crafted from durable steel it ensures reliable performance and longevity. This magazine is specifically tailored for the 9mm Luger caliber providing a seamless fit and function for Rock Island firearms. With a generous 17-round capacity it is ideal for those seeking extended shooting sessions without frequent reloads. Its sleek black finish adds a touch of sophistication to your firearm setup.