Armscor/Rock Island Armory STK150 ULTRA HC 9MM with a 4.49-inch barrel and 17-round capacity. Aluminum integrated grip and optic-ready cover plate.
The STK150 Ultra HC is a striker-fired 9mm pistol that uses an aluminum integrated grip to add weight and reduce felt recoil while remaining comfortable for carry. It features a 4.49-inch barrel, a 17-round option, and an optic-ready cover plate for micro red dot sights. For a reliable optic under $1,000 that pairs well with this platform, consider the Holosun 507C X2 red dot for its compact footprint and proven durability.
Product Specifications
The series is STK.
The caliber is 9MM.
The listed capacity is 10/17.
The barrel measures 4.49 inches.
The overall length is 7.79 inches (198 mm).
The overall width is 1.36 inches (34.5 mm).
The overall height is 5.33 inches (135.5 mm).
The weight is 1.85 lbs (0.84 kgs).
The front sight is a tenon cut with retaining screw.
The rear sight is fixed and integrated on the optic cover plate.
The grips are aluminum (integrated on frame).
The finish is black anodized.
The action is semi-automatic.
The trigger pull is listed as 3.0–7.0 lbs.
The UPC is 480601556611.
The STK150 Ultra HC balances metal-frame feel with a striker-fired platform for controlled recoil and steady follow-up shots. Its integrated aluminum grip and optic-ready top make it a practical choice for everyday carry profiles and range training, while the 17-round option provides extended capacity for sustained practice sessions. The pistol’s compact footprint and fixed rear sight integrated into an optic plate simplify red-dot installation and sight alignment.
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