The Arex Delta M Gen 2 is a semi-automatic handgun chambered in 9mm Luger, suited for sport shooting, self-defense, and everyday carry. It runs on a striker-fired action and comes with one 15-round and one 17-round magazine. 
 

Key Specifications 

• Caliber: 9MM Luger (9X19 Para) 
• Action: Striker 
• Capacity: 17 rounds (includes one 15 round and one 17 round magazine) 
• Barrel Length: 4 inches 
• Weight: 1.1 lbs. 
• Finish: Black 
• Manufacturer: Arex 
• Model Number: Delta M Gen 2 
   

Features 

 
The barrel is a one-piece forged, nitrocarburized steel unit that handles both durability and accuracy without a separate lining. Sights are low-profile, black serrated rear with a white dot front, for quick target acquisition. The slide is cut for most modern red dot sights and ships with mounting plates. 
 
The short-reset trigger allows faster follow-up shots. The magazine release is ambidextrous, and interchangeable backstraps let shooters adjust grip fit for right- or left-handed use. 
 

Usage 

 
At 1.1 lbs., the Delta M Gen 2 is light enough for all-day carry. The 17-round capacity reduces the need for frequent reloads in home defense or range sessions. The optics-ready slide makes it straightforward to add a red dot without sending the slide out for milling.

The Arex Delta M Gen 2 gets generally positive marks from owners. Build quality, ergonomics, and reliability come up consistently in owner feedback. The optics-ready slide is a frequent highlight. It makes adding a red dot simple and doesn't require additional machining.

The 17-round capacity gets good marks for balancing firepower with a manageable package, and owners typically describe the trigger pull as smooth and consistent.

On the downside, some users note that aftermarket holster options for this model are limited compared to more established platforms. A few mention personal preference differences around grip texture or overall weight, though these tend to be subjective rather than functional complaints.

Overall, the Delta M Gen 2 is well-regarded in the striker-fired segment.