The Tisas PX-5.7 Raptor is a semi-automatic pistol chambered in 5.7x28mm with a 4.8-inch barrel. It ships with a 20-round magazine and has an optics ready cut on the slide. Adjustable sights are included and the finish is Black. 
 

Key Specifications 

• Brand: Tisas 
• Model: PX-5.7 Raptor 
• Caliber: 5.7x28mm 
• Action: Semi Auto 
• Capacity: 20+1 rounds 
• Barrel Length: 4.8 in 
• Color/Finish: Black 
   

Detailed Features 

• Optics ready cut for direct red dot mounting 
• Adjustable sights included as standard 
• 4.8-inch barrel 
• 20-round magazine capacity 
• Blue/Black finish option available

Owners of the PX-5.7 Raptor tend to focus on the 5.7x28mm chambering as the primary appeal. The high-velocity cartridge in a pistol format draws interest from shooters who want something outside the 9mm mainstream, and the 20-round magazine capacity adds practical weight to that argument.

Build quality draws mixed reactions. Many find the Tisas fit and finish competitive at its price point, but the trigger on some examples takes a few hundred rounds to smooth out. The optics ready cut is cited as a smart inclusion, and the adjustable sights hold zero well as a backup option.

The main friction owners mention is the cost and availability of 5.7x28mm ammunition compared to more common chamberings. For dedicated range use the PX-5.7 Raptor gets generally favorable marks; for an everyday carry role, the ammo logistics tend to push people toward other options.