The Arex Delta X OR is a 9mm semi-automatic pistol with a two-tone FDE frame, a black slide, and a 4-inch barrel. It comes with a Crimson Trace red dot pre-installed along with included optics plates, giving it a ready-to-shoot sight picture out of the box. The pistol ships with both a 17-round magazine and a 19-round magazine, and the magazine and slide releases are ambidextrous. 
 

Key Specifications 

• Brand: Arex 
• Model: Delta X OR 
• Caliber: 9mm 
• Action: Semi Auto 
• Capacity: 17 Rounds 
• Barrel Length: 4 in 
• Color: FDE 
   

Detailed Features 

• Two-tone FDE frame paired with a black slide 
• 4-inch barrel chambered in 9mm 
• Pre-installed Crimson Trace red dot with included optics plates 
• Ships with a 17-round magazine and a 19-round magazine 
• Ambidextrous magazine release and slide release controls 
• Optics-ready slide cut supports the pre-installed red dot mounting system

Owners of the two-tone Delta X OR often comment on the look of the FDE frame paired with the black slide, saying it stands out compared to the all-black pistols many people carry. Reliability reports are generally positive once the pistol has a few hundred rounds through it to break in.

The pre-installed Crimson Trace red dot is a popular feature for owners who want to start shooting with an optic right away instead of sending the slide out for milling. Having both a 17-round and a 19-round magazine in the box gets frequent mention as a nice bonus, giving a flush option for concealment and an extended option for range use.

On value, the included red dot and extra magazine make the overall package feel like a good deal next to buying a pistol, optic, and spare magazines separately. Some owners note that holster options tailored to the OR slide profile are still limited compared to more established red-dot-ready pistols.