OA Defense 2311 Compact Pro 9mm, 4.25 in Ported Barrel, FDE Aluminum Frame, Holosun HE507COMP-GR, 17+1, 5 Mags
The OA Defense 2311 Compact Pro is a recent-release, USA-made, compact 2011-platform pistol configured for practical performance. This example pairs a 4.25 in ported stainless barrel with a lightweight FDE aluminum frame, a black textured polymer grip module, and fully ambidextrous controls. It ships with an installed Holosun HE507COMP-GR reflex sight and five 17-round SIG P320-pattern magazines, offering a ready-to-run package with high capacity and modern features.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Details: The slide shows light, minor scratches. Scorch marks are present in the barrel porting.
What's Included
- OA Defense zippered soft case
- OA Defense 2311 owner’s manual
- Holosun HE507COMP-GR reflex sight (installed)
- Tan optic protective strap/cover
- Five 17-round stainless steel AMAG SG9 magazines (SIG P320-pattern)
The Compact Pro is a 9mm, hammer-fired, double-stack 1911-style pistol on the 2011 platform. It features a 4.25 in ported barrel, a 17-round capacity, and compatibility with SIG P320 magazines. It blends race-gun performance with everyday-carry reliability.
Built around a commander-length, linkless and bushingless stainless barrel, the slide adds rear cocking serrations, an external extractor, an optic cut, and a top window cut. The FDE aluminum frame keeps weight down and incorporates a flared aluminum magazine funnel in matching FDE for fast reloads.
Controls are fully ambidextrous, including the thumb safeties, slide stop, and the paddle-style magazine release. A flat-faced, serrated trigger and a fiber-optic front sight provide a clean interface for precise shooting. An integrated MIL-STD-1913 three-slot accessory rail supports lights or other rail-mounted accessories.
This pistol includes a slide-mounted Holosun HE507COMP-GR open reflex sight for immediate, modern aiming capability. Five included 17-round stainless AMAG SG9 magazines underscore the design’s use of SIG P320-pattern double-stack magazines, delivering ample capacity and broad magazine availability.