The Beretta M9 is a full-size 9mm pistol with a Single/Double Action trigger, 15+1 capacity, and a 4.9-inch barrel. At 33.3 oz. and 8.5 inches overall, it's a full-size service pistol. The aluminum alloy frame has a non-reflective black Bruniton finish. This is the commercial version of the pistol that served as the U.S. military's standard sidearm from 1985 onward. 
 

Key Specifications 

• Brand: Beretta USA 
• Model: M9 
• Caliber: 9mm Luger (9x19 Para) 
• Capacity: 15+1 rounds 
• Barrel Length: 4.9 inches 
• Overall Length: 8.5 inches 
• Weight: 33.3 ounces (2.1 lbs) 
• Action Type: Single/Double Action 
• Finish: Non-reflective Black Bruniton 
   

Features 

The DA/SA action means the first shot fires from a decocked hammer with a longer, heavier pull, and subsequent shots fire in single-action with a shorter, lighter pull. The ambidextrous safety/decocker lever works from either side, making it accessible for both right- and left-handed shooters. The open-slide design ejects cases reliably and gives a clear visual indicator of a chambered round. Three-dot fixed sights provide quick target acquisition. 
 
The aluminum alloy frame keeps weight reasonable at 33.3 oz. unloaded. At 8.5 inches overall, this is not a concealed carry pistol — it's a duty-size or competition platform. The 15+1 capacity remains competitive. Bruniton finish resists corrosion without reflectivity.

The M9 draws discussion from two distinct groups: shooters interested in the military heritage and buyers evaluating it purely on current performance merits. The DA/SA trigger and aluminum frame give it a different feel from modern striker-fired pistols, and most owners appreciate that distinction once they get trigger time on it.

Reliability and accuracy are consistent points of praise. The ambidextrous controls are genuinely useful, not just a spec box feature, and both right- and left-handed owners mention them positively. The 15+1 capacity is solid for a full-size 9mm.

The main friction point in discussions is weight — at 33.3 oz. unloaded with an all-metal frame, the M9 is heavier than polymer-framed competitors. For range use and duty carry that's acceptable, but for everyday concealed carry it's less practical. Some shooters also prefer the simpler manual of arms of a striker-fired gun over the SA/DA system.