Description
The AREX Delta X OR 9mm 4" 17+1 optic-ready handgun is a striker-fired, full-size 9mm built for shooters who demand reliability and modern features without the premium price tag. Chambered in 9mm with a 4-inch barrel, this pistol ships with a 17-round and a 19-round magazine, giving you 17+1 or 19+1 capacity right out of the box. The slide is nitride-finished, optic-cut, and serrated for positive manipulation, while the frame includes interchangeable backstraps to dial in your grip. Whether you’re carrying, shooting duty, or hitting the range, the Delta X OR delivers a crisp trigger, low bore axis, and a package that’s ready for a micro red-dot sight.
| Specification | Detail |
|---|---|
| Manufacturer | AREX |
| Model | Delta X OR |
| Material | Steel slide, polymer frame (per manufacturer specs) |
| Compatibility | Micro red-dot sights (Shield RMSc footprint), 9mm Luger ammunition |
| Finish | Black nitride |
| Weight | 22.4 oz (unloaded, per manufacturer specs) |
| Condition | New |
Key Features
- Optic-Ready Slide — The slide is pre-cut and includes a plate kit for micro red-dot sights (Shield RMSc footprint). This matters because you can mount a dot without sending the slide off for milling, saving time and money.
- Interchangeable Backstraps — Three backstraps let you adjust grip circumference. This matters because a proper hand fit improves recoil control and shot-to-shot consistency, especially during long range sessions.
- Serrated Slide and Front/Rear Cocking Serrations — Deep serrations at the front and rear give you a sure grip for press checks and slide manipulations. This matters because wet or gloved hands won’t slip during a reload or malfunction clearance.
- 17+1 and 19+1 Magazine Capacity — Ships with one 17-round and one 19-round magazine. This matters because you get extra rounds for the range or a spare carry magazine without buying additional gear.
- Striker-Fired Trigger with Short Reset — The trigger breaks cleanly at around 5.5 pounds with a short, tactile reset. This matters because a predictable trigger aids accuracy and faster follow-up shots on target.
Who It’s For
This pistol is for the practical shooter who wants a modern, optic-ready 9mm without the boutique price tag. It suits concealed carriers who prefer a full-size grip for control, duty or security personnel needing a reliable sidearm, and range shooters who want to run optics and high-capacity magazines. It’s also a strong fit for the southern hunter who wants a versatile handgun for truck, trail, or dove field backup.
Pros & Cons
- Pros: Affordable optic-ready setup, two magazines included (17 and 19 rounds), low bore axis for flat shooting, comfortable grip texture, and reliable out of the box.
- Cons: Aftermarket holster and sight support is thinner than Glock or SIG; the optic plate system uses small screws that require thread locker. Plan for a break-in period of 200 rounds for best function.
Comparison: AREX Delta X OR vs. Zev Technologies OZ9 vs. Agency Arms AOS
| Feature | AREX Delta X OR | Zev Technologies OZ9 | Agency Arms AOS |
|---|---|---|---|
| Price | $445 | $1,200+ | $1,500+ |
| Barrel Length | 4" | 4.5" | 4.1" |
| Mag Capacity | 17+1 / 19+1 | 17+1 | 17+1 |
| Optic System | Plate kit (RMSc) | Direct cut (RMR) | Interchangeable plate (RMR) |
| Trigger | Striker, ~5.5 lb | Striker, ~4 lb | Striker, ~4.5 lb |
| Frame | Polymer, interchangeable backstraps | Aluminum grip module | Polymer with steel chassis |
| Best For | Budget optic-ready shooter | Competition / custom build | Duty / premium carry |
The AREX Delta X OR competes directly with high-end custom Glock-style pistols from Zev and Agency Arms, but at a fraction of the price. You lose some aftermarket support and trigger refinement, but you gain two magazines, a reliable factory build, and the ability to mount a dot without extra machining.
FAQ
Does the AREX Delta X OR come with an optic?
No, the pistol is optic-ready but does not include a red-dot sight. It ships with a plate kit to mount micro red-dot sights using the Shield RMSc footprint (e.g., Holosun 407K/507K, SIG Romeo Zero, Swampfox Sentinel).
What is the trigger pull weight?
Per manufacturer specs, the trigger pull is approximately 5.5 pounds with a short, tactile reset. It’s a striker-fired design with no external safety, though a trigger safety blade is integrated.
Will the 19-round magazine fit flush?
The 19-round magazine extends slightly below the grip, while the 17-round magazine sits flush. Both are included in the box.
Is this pistol compatible with Glock holsters?
No, the AREX Delta X OR has a unique frame and slide profile. Use holsters specifically molded for the AREX Delta or Delta X. Some universal holsters may work, but a dedicated fit is recommended for retention and safety.
What is the warranty?
AREX offers a limited lifetime warranty on the Delta X OR against manufacturing defects. Check with your dealer for specific terms.
Why Buy From Us
- ✔ Nationwide delivery (all 50 states)
- ✔ Ships 1-2 business days
- ✔ 30-day returns
- ✔ Secure checkout
See more semi-auto handguns or browse our 9mm pistols. Also check optic-ready pistols for more red-dot-ready options.
Last updated: April 2026
Reviews
There are no reviews yet.