The Tisas PX-9 Duty Gen 3 is a semi-auto full-size pistol chambered in 9mm with a 4.6-inch threaded barrel. It is optic-ready and ships with 20+1 capacity. The finish is Black. 
 

Key Specifications 

• Brand: Tisas 
• Model: PX-9 Duty Gen 3 
• Caliber: 9mm 
• Action: Semi Auto 
• Capacity: 20+1 
• Barrel Length: 4.6 in 
• Color/Finish: Black 
   

Detailed Features 

• Threaded barrel for suppressor or muzzle device attachment 
• Optic-ready slide 
• Full-size duty format with 20-round capacity 
• Black finish throughout

Owners of the PX-9 Duty Gen 3 commonly point to the threaded barrel and optic-ready slide as the primary draws of this variant. The out-of-the-box suppressor-host capability at this price point is frequently cited as a value differentiator.

The full-size frame and 20-round capacity get positive marks from shooters who use it for duty or competition, though a few note the grip dimensions require adjustment for smaller hands. Gen 3 improvements over prior versions are mentioned but not always specified in detail.

The Tisas brand name prompts some initial skepticism in online discussions, but owners who have run the pistol extensively tend to report reliable function and satisfactory fit and finish for the price.