OA Defense 2311 Pro 9mm Full-Size, 5-inch Ported DLC Barrel, Optics-Ready, Two-Tone Tan/Black, 21+1
The OA Defense 2311 Pro is a full-size, 1911-platform 9mm built around a serialized 7075-T6 aluminum frame and a modular polymer grip module. This Pro model features a 5-inch DLC-treated stainless barrel with porting, a tan slide with top window and side ports, and an optics-ready cut with multi-footprint plates included. It ships with five steel double-stack magazines for a 21+1 capacity, fully ambidextrous controls, and fiber-optic/black iron sights.
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: This pistol shows little signs of prior use. The firearm is in excellent condition, and the bore is clean and shiny.
What’s Included
- OA Defense soft case
- OA Defense factory cardboard box (original case)
- OA Defense owner's manual
- Multi-footprint optic plates: RMR, RMSc/Holosun-K, and Deltapoint Pro
- Spare red fiber-optic front sight blades
- Magazines: 3x 21-round and 2x 17-round steel double-stack magazines
- Magazines feature CAGE code 'LYK8D' with a mix of extended-length and shorter baseplates
The serialized 7075-T6 aluminum frame pairs with a black polymer grip module that has textured panels and a high beavertail. A large flared 7075 aluminum magwell speeds reloads, while the enlarged, textured magazine release offers positive control. The extended dust cover integrates a four-slot 1913 Picatinny rail for mounting lights or accessories.
The tan slide includes forward and rear serrations, a top window, and side ports. It is cut for optics and ships with a multi-footprint plate set supporting RMR, RMSc/Holosun-K, and Deltapoint Pro footprints. Iron sights consist of a red fiber-optic front and a plain black rear, providing a clear sight picture.
Its 5-inch DLC-treated stainless steel barrel is ported to help tame muzzle rise. The pistol uses an external extractor and a single-action-only fire control with a flat-faced trigger and overtravel screw. An ambidextrous thumb safety is fitted, and there is no grip safety.
Chambered in 9mm Luger, the 2311 Pro accepts SIG P320-pattern double-stack magazines and includes three 21-round and two 17-round mags for a 21+1 on-board capacity. Fully ambidextrous controls include the slide stop and thumb safety, supporting left- or right-handed use.