The Model 66 with 2.75-inch barrel is the compact configuration introduced when S&W reintroduced the Model 66 in 2014. The shortened barrel makes this configuration more suitable for concealed carry than the 4.25-inch service length while retaining the full K-frame grip and the Model 66's reinforced cylinder. Type: Revolver Action: Double-Action Caliber: .357 Magnum Capacity: 6 Year introduced: 2014, USA Weight: 36 oz Overall length: 7.9" Status: Active Intended use: concealed_carry, self_defense, law_enforcement