An innovative redesign brings advanced grip ergonomics, enhanced durability, and precision control to the trusted STK series, now available in three optimized models.

The STK Series by Armscor / Rock Island Armory is releasing its newly redesigned line, offering elevated craftsmanship, performance-driven updates, and premium materials. The STK100 Ultra, STK150, and STK200 bring new functionality and classic design together to deliver a truly advanced experience for concealed carry and everyday users.

The STK series stands out with its unique all-aluminum 7075 T6 frame construction—moving away from traditional polymer materials—and a refined 1911-style grip angle, ensuring comfort and control that firearms enthusiasts trust. With the addition of an extended beaver-tail, slide bite is eliminated, providing a smooth shooting experience across all models.

One of the most notable upgrades is the flat-faced trigger, optimized to deliver a crisp and responsive pull that many users already find superior to factory alternatives. The STK100 Ultra, the series flagship, includes more aggressive side grip panels and a checkered frame for added confidence. Designed for maximum speed and efficiency, the Ultra model integrates a new magwell for faster, smoother reloads.

“We’re thrilled to unveil the newly redesigned STK series, which honors the heritage of classic firearm design while embracing modern innovations and user-focused details. These updates bring a level of performance and control that truly stand out in today’s market,” said Martin Tuason, President and CEO of Armscor / Rock Island Armory.

Other features that set the STK series apart include:

• Enhanced Sight Compatibility: The STK series is equipped with a larger optic footprint and co-witness suppressor-height sights for adaptable use with iron sights, even in situations where optics may fail.
• Ambidextrous Functionality: The STK150 and STK200 models feature an ambidextrous magazine release, ideal for left- and right-handed users.
• Industry-Leading Compatibility: Compatible with Glock G3 parts (except the magazine release), Glock magazines, and many Glock holsters, making STK firearms versatile choices for dedicated users.
• Durability and Finish: The PECVD finished barrel, slide, and chassis provide resilience and wear resistance, complemented by a hard-anodized frame finish.
• Enhanced Accessories: Each STK model includes RMR and RMSc optic plates, detachable grip panels, and a high-quality soft case with an integrated magazine pouch and Velcro holder.

For more information on Armscor and Rock Island Armory products, visit www.armscor.com.