TOP AK4D SECRETS

when i called hk in Virginia in 1991 I questioned about have on out. They laughed and advised me to get in touch with back after 100k rounds. Term for phrase thats what im was told.What exactly else is different on these to create a good clone? I am aware the bolt provider includes a scalloped notch in it, the grip body is marked "S-P-A" and also t