I want to start building the closest possible thing to a M4 in a civilian model. Now depending on what your definition of an M4 consists of varies from person to person. My definition of an M4 is a rifle with M4 style feed ramps, 16 inch-4150 vanadium military profile barrel, mil-spec buffer and buffer tube. etc basicAlly the closest thing to a military M4 i want everything mil-spec. Does anyone have a link or parts list for an M4 build, I can't seem to find one they all have what everyone else is building their AR-15 with , like spikes tactical lower with DPMS lower parts kit all the lists I found have stuff like that have what they plan on using. I need a parts kit that doesn't have specific brands I just need to know the part not the brands. Another question is does anyone know what kind of stripped lower to accommodate the M4 style feed ramps because I know they cut farther down into the lower receiver.