Description
The OA Defense 2311 Pro Full-Size 9mm 5-Inch Ported is a duty-ready semi-auto handgun built for high-round-count environments. It ships as a complete kit with multiple magazines, interchangeable optic plates, and night sights. The 5-inch ported barrel and lightened slide reduce muzzle rise for faster follow-up shots.
| Manufacturer | OA Defense |
|---|---|
| Model | 2311 Pro Full-Size Ported |
| Material | Stainless steel barrel, aluminum alloy frame |
| Compatibility | 9mm Luger (9×19), standard-pressure and +P |
| Finish | High Desert Sage Cerakote |
| Weight | 38.6 oz (unloaded, per manufacturer specs) |
| Condition | New |
Key Features
- 5-Inch Ported Barrel — Integral porting vents gas upward to counteract muzzle rise, keeping the sights on target for rapid strings. Per OA Defense specs, the port geometry is tuned to minimize blast interference with the front sight.
- Lightened Optics-Ready Slide — Machined with front and rear serrations for positive manipulation. The removable cover plates accept Trijicon RMR, Holosun K, Leupold DeltaPoint Pro, and Shield RMSc footprints.
- Kit Configuration — Ships with three 17-round magazines, a flush-fit 10-round magazine, and a tool for swapping optics plates. You get everything needed to run right out of the box.
- Flat-Faced Trigger — The single-action trigger breaks at a crisp 4.5 pounds with minimal take-up and positive reset. This supports precision shots without the slop of a curved trigger.
- High Desert Sage Finish — A durable Cerakote coating that resists holster wear, moisture, and carbon buildup. The finish also reduces glare for low-light operations.
Who It’s For
This pistol is built for law enforcement officers, competitive shooters, and serious enthusiasts who log 500+ rounds per month. It handles the heat of extended range sessions and duty rotations without reliability hiccups. If you train frequently and demand a gun that shoots flat, this is your rig.
Pros & Cons
- Pro: Ported barrel delivers noticeably flat recoil impulse — follow-up shots feel almost like a .380.
- Pro: Optics-ready out of the box with six common footprints covered.
- Pro: Kit includes three standard-capacity magazines plus a 10-rounder for restricted states.
- Con: Porting adds muzzle blast and noise, especially indoors or under cover. Not ideal for home defense without ear protection.
- Con: Price point sits above many duty-grade pistols, though the kit value offsets some cost.
Comparison vs. Competitors
| Feature | OA Defense 2311 Pro | Zev Technologies OZ9 | Agency Arms AOS G19 |
|---|---|---|---|
| Barrel Length | 5 inches (ported) | 4.5 inches (non-ported) | 4.02 inches (non-ported) |
| Optic System | Interchangeable plates (6 footprints) | Direct-mount RMR | Agents Optic System (plate-swap) |
| Magazine Capacity | 17+1 (standard) | 17+1 | 15+1 |
| Trigger Pull Weight | 4.5 lbs | 4.0 lbs | 4.5 lbs |
| Weight (unloaded) | 38.6 oz | 25.6 oz | 21.7 oz |
| MSRP | $2,543.56 | $1,899 | $1,795 |
The OA Defense 2311 Pro carries more weight and a longer barrel for reduced recoil, while the Zev and Agency options are lighter but lack porting. For shooters prioritizing muzzle control, the OA Defense kit delivers measurable advantages.
FAQ
What optics fit the OA Defense 2311 Pro?
The slide includes interchangeable plates for Trijicon RMR/SRO, Holosun 407C/507C/508T, Leupold DeltaPoint Pro, Shield RMSc, and Docter/Noblex. The plates are secured with Torx screws — a tool is included.
Does the ported barrel affect reliability with hollow points?
No. According to OA Defense specs, the porting is positioned forward of the chamber and does not interfere with bullet travel. The pistol cycles reliably with 115-grain to 147-grain JHPs from brands like Federal HST and Speer Gold Dot.
Can I use the 10-round magazine for concealed carry?
Yes. The flush-fit 10-round magazine reduces grip length, but the full-size frame still prints. Most users prefer the 17-rounders for duty use and reserve the 10-rounder for range practice or restricted states.
What holsters are compatible with the 2311 Pro?
The pistol fits most 2011-style duty holsters from Safariland, Blackhawk, and G-Code. The 5-inch barrel requires a holster molded for that length — check the manufacturer’s fit guide before ordering.
Is the trigger adjustable?
The trigger pull weight is factory-set at 4.5 pounds and is not user-adjustable without replacing internal components. The over-travel stop is pre-set for a clean break.
✅ Nationwide delivery — ships to all 50 states (check local laws for magazine capacity restrictions).
✅ Ships 1-2 business days — in-stock items go out fast.
✅ 30-day returns — unused firearms in original packaging qualify.
✅ Secure checkout — encrypted payment processing and FFL transfer coordination.
Shop more semi-auto handguns in our Semi Auto Handguns collection. Browse 9mm Pistols for additional options. Check our Duty Pistols category for law enforcement gear.
Last updated: April 2026
Reviews
There are no reviews yet.