The Model 642 CT is the factory Crimson Trace laser grip variant of the standard 642 Airweight, offering integrated laser sighting in the same 15-ounce package. The Crimson Trace Lasergrips activate on grip pressure and require no manual switch activation, making them practical for defensive use. Factory CT pairings are sold as a unit — the laser is integrated into the grip and zero-tested at the factory. Type: Revolver Action: Double-Action Caliber: .38 Special +P Capacity: 5 Year introduced: 2005, USA Weight: 15.5 oz Overall length: 6.31" Status: Active Intended use: concealed_carry, backup