OA Defense 2311 Compact Pro Plus 9mm 17+1 Optics-Ready Double-Stack 1911 Pistol – Matte Black
The OA Defense 2311 Compact Pro Plus combines classic 1911 ergonomics with modern double-stack capacity and full ambidextrous controls. Built on a lightweight 7075-T6 aluminum frame, this 4.25-inch-barreled pistol is the first 1911-pattern handgun designed to run SIG P320 magazines, giving you 17+1 rounds of 9 mm firepower in a compact footprint.
Condition
Overall Condition: Excellent – showing only faint signs of prior use or handling.
Bore Condition: Excellent – clean, mirror finish, no signs of wear.
Bore Rifling: Excellent – sharp lands and grooves.
Minor superficial scratches and blemishes are present on the exterior; they are purely cosmetic and do not affect function.
What’s Included
- OA Defense-branded soft zippered pistol case
- OA Defense factory cardboard box
- Five OA Defense 17-round steel magazines
- Kydex outside-the-waistband holster
- Optic mounting adapter plates (RMR, DPP and RMSc footprints)
- OA Defense 2311 owner’s manual and related paperwork
The double-stack 2311 frame accepts standard 17-round (or greater) SIG P320 magazines, delivering duty-sized capacity without sacrificing the crisp single-action trigger pull 1911 shooters expect.
A stainless, linkless, bushing-less 4.25-inch barrel streamlines takedown while patented debris-clearance channels in the slide and frame keep the action running in adverse conditions.
The optics-ready slide ships with three adapter plates and wears aggressive front and rear serrations plus weight-reducing lightening windows. Night Fision tritium sights are installed for a clean day-night sight picture and co-witness with popular micro red dots.
Controls are fully ambidextrous: twin slide-stop levers, twin thumb safeties and a reversible magazine release make the pistol immediately usable for right- or left-handed shooters. A flat-faced trigger promotes a straight-to-the-rear press for consistent accuracy.
A 5-slot Picatinny rail accepts lights or lasers, while the modular grip and interchangeable magwells let you tailor the pistol for concealed carry, duty or competition roles.