The FMK MK G3 Blue Jay is a compact, striker-fired 9mm pistol built on a polymer frame and designed for dependable semi-automatic operation. It has a 4.5-inch factory-threaded barrel, a blue and black finish, and an optic-ready slide for mounting a compatible red dot sight. Fixed iron sights are included for use without an optic, and the grip carries a textured surface for a stable hold. 
 

Key Specifications 

• Brand: FMK Firearms 
• Model: MK G3 
• Caliber: 9mm Luger 
• Action: Semi Auto 
• Capacity: 14 Rounds 
• Barrel Length: 4.5" 
• Color: Blue/Black 
• Frame Material: Polymer 
   

Detailed Features 

• 4.5-inch threaded barrel for a suppressor or compensator 
• Optic-ready slide accepts a compatible red dot sight 
• Fixed iron sights for quick target acquisition without an optic 
• Textured polymer grip for stable control 
• Striker-fired, semi-automatic operation aimed at everyday carry and range use

The FMK MK G3 in the Blue Jay finish draws attention mostly for standing out from the usual black-on-black compact pistols. Owners generally describe the pistol as functional and reliable for the price, though a portion of buyers report it needs a few hundred rounds to smooth out before the trigger and slide cycle feel consistent.

Ergonomics get positive marks from most owners: the textured grip is easy to control, and the threaded barrel with optic-ready slide lets carry and range shooters add a suppressor or red dot without extra gunsmithing. Some note the fixed sights are basic compared to higher-end pistols.

On value, the MK G3 is viewed as an affordable way into a threaded, optic-ready 9mm platform. Aftermarket holsters and accessories are less common than for the major brands, but the price point and the distinctive Blue Jay color keep it popular with buyers who want something different from a standard black compact.