I really appreciate the info my friend!Although shown but not specifically mentioned in previous posts the fifth rivet from the back of the bottom plate on both sides is a flush rivet. Failure to do this and to make a round head on that particular rivet will cause very bad things to happen. Well not really. As a matter of fact I forgot to do it on both of my builds. I guess it is one way to tell it is not an actual M1919A4 but a home made job. In the original tutorial I was using it was not mentioned and i was too stupid to look at the pictures of the real deal. It is not something that can't be fixed but then grinding it off later means reparkerizing that part of the gun which is the only thing keeping me from doing it.