A factory magazine for the Rock Island Armory STK100, the aluminum-framed striker-fired 9mm that stands apart from the polymer crowd. The STK100's alloy grip frame gives it a heavier, flatter-shooting feel than most duty pistols in its class, and it relies on a proven double-stack 9mm magazine pattern to keep the gun fed.

Spare magazines are the least glamorous and most necessary accessory a pistol owner buys. Range sessions go smoother with three or four on the bench instead of reloading between strings, and rotating your carry stack keeps springs fresh. This one carries a black finish to match the pistol.

In stock and ready to ship straight to your door from Dawson Defense, an Arizona-owned licensed dealer.