The PS90 SBR is a factory-configured short-barreled rifle version of the PS90 with a 10.4-inch barrel matching military P90 dimensions. Requires NFA SBR registration. Type: Rifle Action: Semi-Automatic Caliber: 5.7x28mm Capacity: 50 Year introduced: 2006, Belgium Weight: 91.2 oz Overall length: 19.9" Status: Active Intended use: Tactical, Collecting