OA Defense 2311 Compact Pro Plus 9mm, 4.25 inch SAO, Optics-Ready, Matte Black, 17+1 — Excellent Condition
This OA Defense 2311 Compact Pro Plus is a compact, metal-frame 9mm with a 4.25 inch link-less bull barrel, single-action, hammer-fired operation, and an optics-cut slide. It comes optics-ready with a multi-footprint plate system and includes five 17-round steel magazines, a DEFCON 1 Gear holster, and both the factory box and soft case. Made in the USA and finished in matte black, this example shows excellent overall condition and clean internals.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: This pistol shows minimal evidence of prior use or handling.
What’s Included
- OA Defense factory box with label 'OA 2311 Compact Pro Plus'
- OA Defense zippered soft case
- Original manual
- Cable lock
- DEFCON 1 Gear holster
- Optic-mounting screws/hardware for the factory optics-plate system
- Five 17-round steel 2011/2311-pattern magazines
The Compact Pro Plus configuration pairs a metal frame in matte black with a textured polymer grip module featuring OA logo panels. Controls are fully ambidextrous, including an ambidextrous thumb safety, and the skeletonized loop hammer complements the single-action-only fire control for a consistent, crisp operation.
The slide is optics-cut and uses a multi-footprint plate system. Rear sight configuration is dependent on the optics plate or mounted optic. It also features forward and rear serrations, a lightening window, and an external extractor. Markings include "2311" and "COMPACT PRO" on the slide and "9MM" on the barrel hood.
The 4.25 inch link-less bull barrel supports the compact format while maintaining balance and recoil control. Capacity is 17+1 using 2011/2311-pattern steel magazines, and this listing includes five magazines. A flared aluminum magazine well and an undercut trigger guard aid fast, repeatable reloads.
The dustcover carries a 3-slot MIL-STD-1913 Picatinny rail for mounting compatible accessories. Additional functional details include frontstrap serrations and a high-visibility orange-dot front sight; rear sight configuration depends on the chosen optics plate or optic. Maker’s mark and location are present on the dustcover, indicating Dayton, Nevada, USA.




