S&W's Military & Police revolver, the longest continuously produced handgun in American history. Introduced in 1899 as the Hand Ejector 1st Model, the M&P served American law enforcement for nearly a century in its various configurations. Type: Revolver Action: Double-Action Caliber: .38 Spl Capacity: 6 Year introduced: 1899, USA Weight: 30.5 oz Overall length: 9.5" Status: Discontinued Military use: Yes Intended use: Military, Police, Collecting