Rock Island STK100 9mm 4.5″ 56625-10

The Armscor / Rock Island Armory STK100 is a striker-fired 9mm pistol built on an aluminum frame with an integrated aluminum grip and a 4.5-inch barrel. It is configured with fixed sights and a textured grip angle intended to aid control and handling. Typical real-world uses include personal protection and recreational range shooting. For a pairing optic under $1000, consider the Leupold DeltaPoint Pro for a low-profile red-dot solution that supports fast target acquisition.

Product Specifications

• The manufacturer is Armscor / Rock Island Armory.
• The model is STK100.
• The UPC is 812285026862.
• The caliber is listed as 9mm Luger.
• The barrel measures 4.50 inches.
• The action is Semi-Automatic.
• The frame material is aluminum.
• The grip material is aluminum (integrated on frame).
• The sights are fixed, with a front tenon-cut sight retained by a screw and a fixed rear sight integrated on the cover plate.
• The product includes 1 magazine.
• The unloaded weight is 28.8 ounces (approximately 1.80 lbs).
• The overall length is 7.91 inches (201 mm).
• The overall width is 1.25 inches (32 mm).
• The overall height is 5.16 inches (131 mm).
• The frame and slide color are listed as black, and an accessory rail (Picatinny-style) is noted for lights or lasers.

This pistol combines an aluminum-frame design and a 4.5-inch barrel to produce a platform balanced for controllability and range use while remaining suitable for everyday carry considerations for those who prefer a metal grip frame. Its fixed-sight setup and accessory rail make it practical for range drills and personal carry loadouts where a simple, rugged pistol is preferred.

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