City’s gun business is fully loaded – The Colorado shooting has again put the firearm industry in the national spotlight. It has also focused attention on the handful of New York City shooting ranges, shops and consultancies that have survived by dutifully playing by a complicated set of local rules designed to make gun ownership burdensome. Some have thrived on that complexity. Consultants and attorneys charge as much as $15,000 to help gun lovers like Donald Trump pack heat. “There are high-profile people as well as average businessmen who want a permit but don’t feel comfortable doing the process themselves,” said John Chambers, an attorney who helped start consultancy Gun Permits Inc. four years ago.