The Grand Power Q100 Mk23 is a semi-automatic handgun chambered in 9mm with a 4.25-inch stainless rotating barrel. It has a 15+1 round capacity and uses a striker-fired direct blowback operating system. The slide is optic-ready with serrations, and the steel frame includes an accessory rail and beavertail, finished in black throughout. 
 

Key Specifications 

• Brand: Grand Power 
• Model: Q100 Mk23 
• Caliber: 9mm 
• Action: Semi Auto 
• Capacity: 15+1 
• Barrel Length: 4.25 inches 
• Color/Finish: Black 
   

Detailed Features 

• 4.25-inch stainless rotating barrel 
• Optic-ready serrated slide 
• Steel frame with accessory rail 
• Beavertail grip safety configuration 
• Striker-fired direct blowback operation with textured grip

Owners of the Grand Power Q100 Mk23 often lead with the rotating barrel as the defining characteristic. The mechanism is smooth and contributes to a noticeably softer perceived recoil cycle compared to standard tilt-barrel designs. The 15+1 capacity in 9mm is competitive, and the optic-ready slide makes mounting a red dot straightforward without milling.

The steel construction makes the Q100 Mk23 heavier than polymer-framed competitors, which some shooters see as a benefit for recoil management and others see as a drawback for all-day carry. The beavertail and textured grip get good marks for hand placement and control during strings of fire. Fit and finish quality from Grand Power is generally well-regarded, though the brand's limited US distribution can make parts and service harder to access.

The striker-fired direct blowback system draws some skepticism from those accustomed to short-recoil designs, and the trigger feel polarizes opinion. Some find it crisp; others want a lighter break. The accessory rail is functional and accommodates common light/laser units without issue.