Description
The Arex Delta M Optic Ready Black is the compact Delta in all-black, with a 4-inch plain-muzzle barrel and a factory optic cut. It ships with one 15-round magazine and one 15+2 extended magazine, along with the adapter plates needed to mount a red dot, which makes it a complete carry package rather than a starting point.
Compact and Optic Ready
4-inch barrel with a plain muzzle, so standard holsters fit without extra clearance at the front.
Optic-ready slide cut at the factory, with adapter plates supplied for the common red dot footprints.
The Arex Delta M Optic Ready Black is finished in black across both slide and frame rather than two-tone.
Accessory rail on the dust cover for a weapon light or laser.
Capacity, Controls and Frame
One 15-round magazine and one 15+2 extended magazine supplied, giving 15+1 in standard configuration.
Ambidextrous magazine release and slide stop.
Interchangeable backstraps, so grip circumference adjusts to the hand.
Serialized trigger assembly rather than a serialized frame.
Striker-fired action with a polymer frame.
Arex Delta M Optic Ready Black Specifications
- Caliber: 9mm Luger
- Capacity: 15+1 standard, 17 rounds with the supplied extended magazine
- Barrel: 4 inch, unthreaded
- Slide: optic ready with adapter plates supplied
- Finish: black slide and frame
- Frame: polymer with interchangeable backstraps
- Controls: ambidextrous magazine release and slide stop
- Trigger: serialized trigger assembly
- Magazines: one 15-round and one 15+2 extended
- Accessory rail: yes
- UPC: 815537024074
All-black is the practical choice for a carry gun, and not only because it is conventional. A uniform dark finish gives away less in low light than a two-tone does, and scuffs on a black polymer frame are far less visible than they are on a light-colored one. If the gun is going to live in a holster against a belt every day, black hides the life it leads.
Why it is worth considering
- Optic cut and adapter plates included from the factory.
- Two magazines, one standard and one extended.
- Ambidextrous controls and interchangeable backstraps.
- Plain muzzle fits standard holsters.
- Serialized trigger assembly rather than a serialized frame.
Who it suits
Concealed carriers who want a compact 9mm already set up for a red dot are the natural buyers, and the price sits well below what an optic-cut pistol from the larger manufacturers costs. If you prefer the two-tone look, the same pistol is offered with a flat dark earth frame; if a compensator or suppressor is in your plans, the Tactical version adds a threaded barrel.

Choosing Within the Delta Range
Arex builds the Delta in M, X and L sizes, each available plain-muzzle like this one or in the Tactical configuration with a threaded barrel and suppressor-height sights. The same pistol with a flat dark earth frame is the two-tone option, the X Optic Ready is the full-size version holding 17, and the M Tactical adds threads to this compact frame. Browse the wider handgun catalog. Arex pistols are imported by Global Ordnance.
For practice, 115-grain full metal jacket is the standard load, with a 124-grain jacketed hollow point for defensive use. Spare 15-round magazines are the correct pattern for the M.
On the serialized trigger assembly: because the serial number lives on the trigger group rather than the polymer frame, the grip module is an unregulated part. A worn or cracked grip can be replaced without a transfer, and different frame sizes become an option down the road. All firearm orders ship to a licensed FFL dealer for transfer, and MAG5 Firearms will coordinate the paperwork with the dealer of your choice.






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