The Arex Delta L Gen2 is a 9mm striker-fired semi-automatic pistol with a 4.5-inch barrel, 17-round capacity, and a gray frame with black nitride slide. It ships with an optic plate kit and interchangeable backstraps. 
 

Key Specifications 

• Model: Delta L Gen2 
• Caliber: 9mm 
• Barrel Length: 4.5 inches 
• Capacity: 17 rounds (includes one magazine) 
• Finish Color: Gray (with Black Nitride Slide) 
• Weight without Magazine: 21.0 oz (596 g) 
• Weight with Magazine: 23.8 oz (677 g) 
• Overall Length: 7.7 inches (196 mm) 
• Height: 5.5 inches (140 mm) 
• Width: 1.18 inches (30 mm) 
• Condition: New in Box 
   

Detailed Features 

 
The striker-fired mechanism gives a consistent trigger pull from shot to shot. The optic plate kit is included, so you can mount a red dot without buying additional hardware. Interchangeable backstraps let you adjust grip size to your hand. The black nitride slide finish is corrosion-resistant. 
 
At 7.7 inches overall and 21 oz without a magazine, the Delta L sits in full-size handgun territory but isn't particularly heavy for what it is. The 4.5-inch barrel provides a good sight radius for accuracy at range distances. 
 

Usage Scenarios 

• Competitive shooting: optic-ready design and consistent trigger pull work well for practical shooting sports. 
• Home defense and duty use: 17+1 capacity and reliable feeding. 
• Range training: comfortable grip with backstrap options for different hand sizes.

Owners of the Arex Delta L Gen2 report a generally positive experience, with the ergonomics and optic-ready setup getting the most consistent praise.

The grip feels comfortable for extended range sessions, and the optic plate kit is appreciated since it removes an immediate accessory purchase from the equation. Feeding and ejection are described as reliable across typical 9mm loads, which is the baseline expectation for any modern semi-auto. The 4.5-inch barrel is seen as hitting a useful middle point for both range use and carry.

Comparisons to more established platforms come up often, usually focused on aftermarket support. Holsters and accessories specific to the Delta L are harder to source than options for Glock or M&P platforms, which matters to buyers who want to customize heavily. Some users also compare the fit and finish to higher-priced competition and find it slightly behind, though most consider it appropriate for the price range.

Overall sentiment is positive. The Delta L Gen2 is considered a capable, reliable pistol at a fair price for buyers who don't need a deep aftermarket ecosystem.