The MasterPiece Arms MPA930SST is a usa-made single-action carbine chambered in 9mm Luger, introduced in 2016. Primary use: Home Defense, Tactical, Range. Type: Carbine Action: Single-Action Caliber: 9mm Luger Capacity: 17 Year introduced: 2016, USA Weight: 96 oz Overall length: 36" Status: Active Intended use: Home Defense, Tactical, Range