The Sig Sauer P226 MK25 is a DA/SA semi-automatic pistol chambered in 9mm Luger, carrying 10+1 rounds from a 4.4-inch barrel. It's the civilian variant of the pistol designated P226 by the U.S. Navy SEALs, and the MK25 designation marks that lineage with a specific anchor engraving on the slide. 
 

Key Specifications 

• Brand: Sig Sauer 
• Model Name: P226 MK25 
• Caliber: 9mm Luger 
• Action Type: DA/SA (Double Action/Single Action) 
• Capacity: 10+1 rounds 
• Barrel Length: 4.4 inches 
• Overall Length: 7.70 inches 
• Weight: 34 oz (2.2 lbs) 
• Sights: Siglite Night Sights 
• Grip Material: Black Polymer 
• Frame Material: Aluminum Alloy with Hardcoat Anodized Finish 
• Includes Magazines: (3) 10-round steel magazines 
   

Detailed Features 

The SIGLITE tritium night sights are standard on the MK25, making low-light target acquisition practical without adding a light or optic. The aluminum alloy frame with hardcoat anodized finish handles regular carry and use without corroding. Three 10-round magazines are included in the box. 
 
The DA/SA mechanism means the first shot from a decocked hammer is double-action (heavier pull), with subsequent shots in single-action (lighter pull). The Picatinny rail on the frame accommodates weapon-mounted lights and lasers. The manual thumb safety is present on this model.

The P226 MK25 draws strongly positive feedback from owners who prioritize a metal-frame DA/SA pistol with proven military lineage.

Build quality and reliability are the most consistently praised attributes. The all-metal frame gives the pistol a solid feel that polymer-frame guns can't replicate, and feeding reliability across different ammunition types is reported as excellent. Accuracy is frequently highlighted, with the SIGLITE night sights getting specific credit for practical use in low-light conditions.

Ergonomics are a point of discussion. Most owners find the grip comfortable and the overall weight appropriate for a pistol of this size. The caveat that comes up regularly is for shooters with smaller hands, who note that the grip width can be a stretch. The DA/SA trigger gets described as smooth and consistent, though newer shooters sometimes need time adjusting to the heavier DA first shot.

Three included magazines is well-received. Price is the most common concern raised - the P226 MK25 sits at the higher end of the 9mm pistol market, and some owners debate whether the premium over less expensive alternatives is justified for their specific use case. Those who carry or use it professionally generally consider the build quality worth it; casual range shooters occasionally push back on the cost.