 The return spring is located in the butt of the weapon, and is connected to the bolt carrier/gas piston via a long rod; additionally, there is a short spring buffer located around the return spring at the juncture of the receiver and butt, which softens the impact of the bolt group at the end of its rearward stroke.Its charging handle is located at the right side of receiver and does not reciprocate when the gun is fired.The ammunition feed is from a top-mounted box magazine made from sheet steel, holding just 20 rounds in a two-row configuration.