OA Defense 2311 9mm Pistol, Full-Size, 5-inch, Stainless

The OA Defense 2311 is a full-size 9mm pistol (brand part no. OA2311FULLSIZESTBLK) built around a 5-inch stainless steel barrel. OA Defense built the 2311 to combine blistering speed, repeatable accuracy, and uncompromising durability in a full-length fighting platform, with a full-length frame that delivers superior stability and balance for controlled, rapid engagement. The stainless barrel ensures long service life and consistent performance under heavy use, and an extended sight radius with a fiber optic front sight supports confident, steady shot placement when precision matters most. Engineered for law enforcement professionals and serious defensive shooters, this 2311 is built to perform when conditions are demanding.

Key Specifications

• Chambered in 9mm Luger, one of the most widely available defensive calibers.
• Ships with a 17-round magazine.
• Runs a 5-inch stainless steel barrel.
• Equipped with a fiber optic front sight for a fast, clear sight picture.
• The slide is optic-ready and serrated.
• Controls are fully ambidextrous for right- or left-handed shooters.
• Classified by OA Defense as single-action only.
• Cycles as a semi-automatic action, one round per trigger pull.
• Built on the 2311 full-length frame platform.

Frequently Asked Questions

What action does this pistol use? Single-action only.

Are the controls ambidextrous? Yes, fully ambidextrous.

Buy the OA Defense 2311 9mm Pistol

Built for duty and combat use, this 2311 delivers full-size stability and stainless-barrel durability for serious defensive shooters. Order it from our Lubbock, Texas gun shop for fast, insured FFL shipping, and see more from OA Defense in our semi-auto handguns selection.