From Kalashnikov USA: "The Kalashnikov USA™ KP-9 is our 9mm semi-automatic AK style pistol based upon the Russian Vityaz-SN submachine gun. Made proudly here in the U.S.A., the KP-9 offers a variety of options for the Vityaz enthusiast. With its hinge block and quick detach mount on the back, the KP-9 comes SBR ready, which allows you to enjoy shooting while waiting on your BATFE paperwork. Those who prefer the pistol style can use the JMac RSA 5.5 stock adapter along with the 1913 pistol brace by SB Tactical. The KP-9 accepts Kalashnikov USA 30 round magazines, has a hinged top cover and Picatinny rail along with ½”-28 threaded flash suppressor." Read more at Kalashnikov USA's website here.