The Kalashnikov USA™ KP-9 is the civilian legal, 9mm semi-auto only AK style pistol based upon the Russian Vityaz submachine gun. Proudly made 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 at the rear of the receiver, the KP-9 comes ready for conversion into a short-barreled rifle (SBR) under the provisions of the National Firearms Act (NFA) of 1934.* The KP-9 pistol features a closed bolt blowback design that incorporates an out-of-battery safety mechanism so the gun cannot fire unless the bolt is fully closed. The KP-9 also features feed ramps that are specially designed to reliably chamber jacketed hollow point bullets. This semi-auto pistol accepts 30-round and 10-round Kalashnikov USA™ magazines. The steel-lined polymer magazines feature a double-column, double-feed design inspired by the battle-proven magazines used in the PPS-43 submachine gun. The KP-9’s hinged top cover has an attached Picatinny rail. The muzzle features 1/2 inch x 28 suppressor-ready muzzle threads (and a shoulder) making it compatible with most US muzzle devices and suppressors. It comes from the factory with a flash suppressor installed. When purchasing from us here at WEKA, this pistol will already have the Kalashnikov USA side folding pistol brace installed.