Chambered in the 5.7x28mm cartridge, the FN PS90(R) utilizes blowback operation and fires from a closed bolt for greater accuracy and reliability. The FN PS90(R)'s civilian legal 16.04 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(R) fully ambidextrous. FN's PS90 is a civilian ownable variant of the legendary P90 submachinegun. This is an incredibly unique design that is compact, powerful, accurate and can hold an impressive 50 rounds per magazine. While they are often purchased for the cool/fascinating design, make no mistake, the FN PS90 is a phenomenal self-defense carbine. This listing not only comes with 2-50 round magazines, but a Vortex Viper 6 MOA red dot as well. Vortex Optics has taken the industry by storm over the last decade, and FN has been the gold standard of firearms manufacturing for well over a century. The combination of these 2 brands is fantastic, the price of this combination... even more so.