look up some of wey ferro's (might be wey farrow) M4 pics in the This is the M4 thread.
That's all you need to do to paint a gun so it doesn't stand out.
lay it on the ground, spray it, flip it over, spray it. not covering everything in one pristine even coat = more breakup of the mental "it's a gun!" association
if you want to get fancy, hit it here and there with a bit of a darker colour.
if it ends up looking like a pile of yard waste...you've done a great job
If you want a gucci pretty thing...buy 4 cans of spray paint, buy the stencils off the web (some you can download and cut out yourself), follow a pattern and go for it. When you mess that up...go back to the top of this post and do that...but ignore this last paragraph
