OA Defense 2311 Compact Pro 9mm, 4.25" Barrel, 17+1, Leupold DeltaPoint Pro, Aluminum Frame, Ambi Controls
This OA Defense 2311 Compact Pro stands out as a recent-production, custom-configured 9mm with a factory 4.25" linkless, bushingless barrel, a 7075-T6 aluminum serialized frame mated to a polymer grip module, and fully ambidextrous controls. It arrives with a Leupold DeltaPoint Pro red dot already installed, an optics-plate system, and a substantial magazine package using SIG P320-pattern steel mags.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: There are minimal signs of prior use. The bore is clean and shiny.
What’s Included
- Original box
- OA Defense zippered soft pistol case
- OA 2311 Owner Safety Manual
- Leupold DeltaPoint Pro red dot sight (installed)
- GunfightersINC Kydex holster
- OA 2311 optics mounting plates with integral rear notches
- Spare front sights (NF H3-marked)
- 5x 15-round magazines and 3x 17-round magazines (SIG P320-pattern steel; some with OA-branded baseplates)
The Compact Pro configuration delivers a 4.25" 9mm barrel in a single-action, hammer-fired 1911-platform layout, paired with a lightweight 7075-T6 aluminum frame and a textured gray polymer grip module. It features a flared metal magwell and integrated bilateral thumb ledges for consistent hand placement and efficient reloads.
The slide shows lightening/relief cuts plus forward and rear cocking serrations, and it is cut for optics. The included OA mounting plates feature integral rear notches to support co-witnessing, while the slide retains a front sight with a bright orange index for fast visual pickup.
Controls are fully ambidextrous, including the manual thumb safety and slide stop, with an ambidextrous, reversible paddle-style magazine release. The design omits a grip safety. The dustcover carries a MIL-STD-1913 accessory rail for lights or other rail-mounted accessories.
This pistol accepts SIG P320-pattern magazines and is set up here with both 15-round and 17-round options; capacity is 17+1. The skeletonized spur-style hammer and single-action trigger round out the performance-focused feature set. Marked OA DEFENSE • DAYTON, NV and made in the USA.