The 2.125-inch Model 642 provides a marginally longer sight radius and velocity increment over the 1.875-inch version while still remaining concealable. Some shooters find the additional quarter-inch of barrel meaningfully improves their ability to aim quickly. Type: Revolver Action: Double-Action Caliber: .38 Special +P Capacity: 5 Year introduced: 1996, USA Weight: 15.8 oz Overall length: 6.31" Status: Active Intended use: Carry, Concealed Carry, Backup