"AK47 receiver, type SA85 for the AKM Hungarian or Polish underfolder. This is will also work for Romainian AK's. 7.62 x 39MM. Constructed with 4130 ANN ACQ ordnance grade steel, heat treated throughout. Authentic top rail step down. Correct style mag well dimples, mag guides and ejector. "
Just to be clear, this receiver will not accept the Romanian underfolder trunnion.
McKay puts out high quality stuff. I'm going to pick up a few.