Out of stock
SKU: ARM 57113.00
UPC: 4806015571131
MPN: 57113
The Rock Island Armory Stk100 Ultra 9mm 4.5" pistol represents a purpose-built platform designed for shooters who demand reliability, accuracy, and value in a compact defensive handgun. Manufactured by Armscor under the Rock Island brand, this single-action, recoil-operated semi-automatic serves both civilian carry applications and duty use where a lightweight, ergonomic 9mm solution is required. The 4.5-inch barrel length balances velocity retention for terminal performance with overall package manageability, making it suitable for concealed carry, home defense, or range training without compromise.
Built on a proven 1911-variant platform, the Stk100 Ultra features a precision-machined steel frame and slide that deliver consistent shot-to-shot accuracy and durability under sustained use. The 4.5-inch barrel provides optimal sight radius for target acquisition while the single-action trigger geometry enables precise trigger control critical for defensive accuracy. At approximately 1 pound unloaded, the pistol remains light enough for extended carry without fatigue, yet retains sufficient mass to manage recoil impulse and facilitate rapid follow-up shots—a critical advantage in force-on-force scenarios where speed and accuracy intersect.
This platform benefits tactical professionals, civilian defensive shooters, and sport competitors alike, particularly those with 1911-pattern familiarity who appreciate the ergonomic controls and intuitive manual safety manipulation. The Rock Island Stk100 Ultra pairs effectively with standard 1911 holster systems, duty belts, and training protocols—eliminating learning curve friction in high-stress deployment. Law enforcement and armed professionals will recognize the stripped-down reliability philosophy: fewer parts, proven metallurgy, and no unnecessary complexity ensure function when lives depend on it. For shooters seeking a competent, no-nonsense 9mm platform without premium pricing, this Armscor offering delivers measurable performance.
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