The Rock Island Armory STK100 is a striker-fired 9mm pistol (brand part no. 56625) from Armscor/Rock Island Armory built around a polymer frame for everyday carry and range use. It ships in a black finish with a 17-round magazine, giving it full-size capacity in a duty-style package. The STK100 is designed as an accessible, budget-friendly striker-fired option for shooters who want a dependable 9mm without paying a premium price. It suits home defense, range training, and concealed carry for shooters who prefer a polymer-frame, high-capacity handgun.

Key Specifications

• Chambered in 9mm Luger, the most widely available defensive handgun caliber, keeping practice ammo easy to find.
• Ships with a 17-round magazine for full-size capacity in a duty-style pistol.
• Finished in black for a low-profile, versatile appearance that matches most holsters.
• Runs a striker-fired action for a consistent trigger pull shot to shot.
• Built on a polymer frame to keep the pistol lightweight for carry and range use.

Frequently Asked Questions

What is the magazine capacity? This STK100 ships with a 17-round magazine.

Is this pistol striker-fired? Yes, it runs a striker-fired action for a consistent trigger pull.

Buy the Rock Island Armory STK100 9mm Pistol 17-Round Black

Pick up the Rock Island Armory STK100 9mm Pistol from Schaefer Defense for an affordable, full-capacity striker-fired option. Compare it with other 9mm options in our semi-auto handguns lineup, then order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.