So I recently got a saiga 12 parts kit with everything but a reciever so what reciever do i need? Would i need an 1.5mm russian/romanian style rpk type or would a 1mm polish reciever be good for it? It looks like it bulges on the sides like a 1.5mm rpk style reciever but i wanted to be sure, also I wanted to verify that the rivet pattern is the same as the rpk if it is russian/romanian, or if it is still the 1.5mm reciever but follows the yugo rivet pattern for some reason. Sorry if it is a little hard to follow please ask any questions for more information.