OA Defense 2311 Pro Compact | 9mm | 4.25″ Barrel

The OA Defense 2311 Compact Pro is a compact, optic-ready 9mm pistol designed to deliver duty-grade features in a smaller, carry-friendly package. It pairs a 4.25-inch DLC-coated stainless barrel with a serrated, optic-ready slide and a modular grip on a 7075 aluminum frame, and it includes ambidextrous controls for user adaptability. Upgraded trigger components (G2 hammer and sear) are intended to produce a clean, predictable trigger break for consistent follow-up shots. For a durable, under-$1000 red-dot that complements the slide footprint and intended use, consider a Holosun 507C-series compact reflex sight.

Applications: everyday carry (EDC) and range training/competition.

Product Specifications

• The manufacturer is OA Defense.
• The model is 2311 Compact Pro.
• The caliber is 9mm (9x19mm).
• The barrel length is 4.25 inches.
• The barrel is made of stainless steel with a DLC coating.
• The frame material is 7075 aluminum.
• The grip material is black polymer.
• The action is Semi-Auto.
• The slide is optic-ready and serrated.
• The finish is black DLC.
• The sights include a fiber optic front sight and a Dawson Precision fixed rear sight.
• The safety is ambidextrous.
• The size designation is compact.
• The magwell material is 7075 aluminum.
• The UPC is 850084941207.

The 2311 Compact Pro balances compact dimensions with duty-style controls and upgraded internals for shooters who want a carry-ready platform with expanded capability. Its optic-ready slide, modular grip architecture, and aluminum magwell from the Plus Kit broaden its practical use for everyday carry and serious range work while preserving a controllable, compact footprint.