I have this highly upgraded tippmann m4 I'm trying to sell to fund my Jeep build. It has a heavy bolt, TDC Hop Up mod, o ring mod, rof mod, velocity lock pin, mk18 rail, new outer barrel, Prometheus inner barrel with g and g green bucking, high velocity flow bolt, new stock, buffer tube spacer, line and can include a tank or attachments if needed/for extra. Price is obo and I am negotiable on it. Please need this thing gone quick and can give any information on it/shooting videos.