The Rock Island Armory STK100 9mm 4.50" Black Parkerized 10-Round pistol blends modern striker-fired performance with a distinctive aluminum grip frame. Its 4.5 inch barrel, optic-ready slide with lightning cuts, and textured aluminum grip panels work together to provide a controllable, balanced sidearm that stays flat under recoil while remaining comfortable for all-day carry.

This STK100 configuration offers a 10-round magazine capacity, fixed sights, and a Picatinny accessory rail for lights or lasers, making it well suited for home protection, range practice, and training. Shooters who appreciate a 1911-style grip angle in a contemporary semi-automatic platform will find the STK100 familiar yet refined. The pistol reflects Rock Island Armory’s focus on practical design, durable construction, and accessible innovation.

Key Features:

• Manufacturer: Rock Island Armory
• Model: STK100
• Caliber: 9mm Luger (9x19)
• Action: Striker Fired Semi-Automatic
• Barrel Length: 4.5"
• Capacity: 10+1
• Sight Type: Fixed Sights
• Optic Footprint: Optic Ready Slide Plate
• Unique Features: Textured Aluminum Grip, 1911-Style Grip Angle, Picatinny Accessory Rail, Lightning Cuts On Slide
• Number Of Magazines: 1
• Weight: 24–28.8 oz (approximate per listings)
• Overall Length: 7.91"