Steps taken:
Base coat of flat black, tape to exclude.
Coat of Rust Brown, tape to exclude.
Coat of OD Green.
Spray from about 2 feet away with black and brown randomly to break patterns, blend colours.
Add ghillie.
Had to make my own outer barrel, but it worked well and isn't SO noticable. I'm going to stencil some burlap on in bringht green on the forward points, once I get the correct coloured paint.