I'm thinking about contracting someone to build my first AR. I'm brand new to this. Who do you suggest I enlist to build my weapon? This is what I'm thinking about for my first build. VLTOR Vis monolithic upper 16" barrel (SOCOM barrel. Is this possible with mid-length gas?) Gen II lower from Noveske A2 Stock I like a fixed front sight so I may do that along with a BUIS rear Daniel Denfense Lower parts kit Buffer tube, buffer Anything you would do differently, anything I'm missing?