The OA Defense 2311 Pro Elite Full Size is a single-action, semi-automatic pistol chambered in 9mm Luger. It runs a 5-inch ported barrel under an optics-ready, serrated slide finished in Black DLC steel, mounted on a black aluminum frame with a built-in Picatinny rail. Ambidextrous controls and a black aluminum grip module round out the full-size build. 
 

Key Specifications 

• Brand: OA Defense 
• Model: 2311 Pro Elite 
• Caliber: 9mm Luger 
• Action: Single Action 
• Barrel Length: 5 inches, ported 
• Slide: Black DLC steel, optics-ready and serrated 
• Frame: Black aluminum with Picatinny rail 
• Grip: Black aluminum, ambidextrous controls 
   

Detailed Features 

• The 5-inch barrel is ported to help manage muzzle rise on a full-size 9mm platform. 
• The slide is cut for a red-dot optic and carries front and rear serrations for manipulation. 
• Ambidextrous controls put the safety and slide release within reach for either-handed shooters. 
• The aluminum grip module attaches to the frame's built-in Picatinny rail for a light or laser. 
• Listings for this model show magazine capacity configured at either 10+1 or 17+1 depending on the compliance variant sold.

Full-size 2011-pattern pistols like the OA Defense 2311 Pro Elite draw a lot of praise for fit and finish. Owners like the tight slide-to-frame fit and the crisp trigger that the double-stack 2011 design is known for, and the aluminum grip module holds up well to regular range use. A common gripe with pistols in this class is that the metal grip adds noticeable weight compared to a polymer-framed 9mm, which some carry-focused owners see as a downside and competition shooters see as an advantage for recoil control.

In the hand, the full-size frame and ambidextrous controls make the pistol comfortable for extended range sessions, and the ported barrel is generally described as taking a real bite out of muzzle flip during rapid strings. Owners moving from a striker-fired gun sometimes need a session or two to get used to the single-action trigger and manual safety, but most settle in quickly.

On value, 2011-style pistols sit above a typical striker-fired 9mm in price, and buyers usually justify it by pointing to the trigger and the optics-ready slide. Aftermarket support for the 2011 platform in general is strong, with holsters, sights, and magazines widely available, though parts specific to a smaller maker like OA Defense can be harder to source than for the biggest names in the category.