The S&W 586 L-Comp Performance Center is a 7-round .357 Magnum revolver with a 3-inch ported barrel, double-action/single-action operation, and tritium night sights. It weighs 36.40 oz. with blued carbon steel construction and checkered Altamont rosewood grips. 
 

Key Specifications 

• Brand: Smith & Wesson 
• Model Name: 586 L-Comp 
• Caliber: .357 Magnum 
• Action: Double Action/Single Action (SA/DA) 
• Capacity: 7 Rounds 
• Barrel Length: 3 inches 
• Overall Length: 8 inches 
• Weight: 2.3 lbs (36.40 oz) 
• Finish: Blued Carbon Steel (Black) 
• Sights: Tritium Night Sight Front, Adjustable Black Board Rear 
• Grip Material: Checkered Altamont Rosewood 
   

Detailed Features 

 
The ported barrel vents gas upward to reduce muzzle rise, which speeds up target reacquisition on follow-up shots. At 3 inches it's compact enough for concealed carry while still keeping a 7-round cylinder -- one round more than most comparable L-Frame revolvers. The tritium night sight front and adjustable rear give solid low-light capability. 
 
The exposed hammer allows single-action shooting when precision matters. The rosewood grips are checkered for grip, and the L-Frame provides more cylinder capacity than a K-Frame at comparable size.

Users who discuss the 586 L-Comp tend to appreciate the combination of the ported barrel and 7-round capacity -- those two features together make it a useful competition and carry revolver. Accuracy at typical defensive distances gets consistent positive remarks.

The tritium sights get called out as genuinely useful, not just a spec line. Build quality and in-hand feel are recurring positives. Weight comes up as a concern for extended carry; at 36.40 oz. it's a substantial gun, and some users find it heavy for all-day carry while others prefer the mass for shooting stability. Price is viewed by some as high relative to standard S&W L-Frames, though Performance Center work commands a premium.