The Model 610 is an N-frame revolver chambered in 10mm Auto using full-moon clips, offering the power of the 10mm pistol cartridge in a revolver platform. Introduced in 1990 to capitalize on FBI interest in the 10mm cartridge, it provides a unique combination of N-frame durability and mass with a semi-automatic caliber. Type: Revolver Action: Double-Action Caliber: 10 Capacity: 6 Year introduced: 1990, USA Weight: 50.5 oz Overall length: 9.5" Status: Active Intended use: duty, competition, collector