The Rock Island Armory STK100 is a full-size, striker-fired pistol chambered in 9mm with a 4.5-inch barrel and a 17+1 round capacity. It pairs an anodized aluminum frame and integrated aluminum grip with a parkerized slide for a metal-frame feel with reduced felt recoil. The slide is optics-ready and features fixed rear sights integrated on the optic cover plate for aftermarket red dot compatibility.
Key Specifications
- The caliber is 9mm Luger.
- The capacity is 17+1 rounds.
- The barrel measures 4.5 inches.
- The action is striker-fired semi-automatic.
- The frame material is aluminum with an integrated aluminum grip.
- The frame finish is black anodized and the slide finish is parkerized.
- The weight is approximately 28.8 oz.
- The overall length is 7.91 inches.
- The sights are a tenon cut front and a fixed rear integrated on the optic cover plate.
- The package includes one 17-round magazine.
With its full-size capacity, metal-frame construction, and optics-ready slide, the STK100 is well-suited for range work and defensive applications where controllability and sight options matter. Its aluminum grip and balanced weight provide a stable shooting platform without the bulk of heavier steel frames, making it a practical option for shooters seeking a durable, full-size 9mm pistol.
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