Smith & Wesson Model 610 in 10mm with 4-inch barrel — the shorter defensive-carry configuration of the N-frame 10mm revolver. More portable than the 6.5-inch hunting variant. Type: Revolver Action: DA/SA Revolver Caliber: 10mm Auto Capacity: 6 Year introduced: 1998, United States Weight: 38 oz Overall length: 9.5" Status: Active Intended use: Home Defense, Hunting