John Rich -- one half of the country band Big & Rich -- is FURIOUS at Nike for the mega deal it made with Colin Kaepernick ... and says his sound guy is already planning on burning his Nike gear.
As we previously reported ... Nike signed Colin as part of its "Just Do It" 30th anniversary campaign -- a deal that includes a custom shoe, custom apparel and other Kaepernick-centric merchandise.
Our Soundman just cut the Nike swoosh off his socks. Former marine.