Product Features & Specifications Chambered in the 5.7x28mm cartridge, the FN PS90 utilizes blowback operation and fires from a closed bolt for greater accuracy and reliability. The FN PS90's civilian legal 16.04a ^2 cold hammer-forged MIL-SPEC barrel is equipped with an integrated muzzle brake to reduce recoil. Dual magazine latches, cocking handles and an innovative synthetic thumbhole stock with a molded-in sling attachment point help make the FN PS90 fully ambidextrous. Models with 10 or 30-round polymer detachable magazines are available. SPECS CALIBER: 5.7x28mm OPERATION: Closed bolt, blowback MAG CAPACITY: 50 rd. WEIGHT: 6.28 lb. BARREL LENGTH: 16" STOCK COLOR: Matte Black OVERALL LENGTH: 26.23" SKU 3848950463 UPC 845737002589