I'm part of a team of MN DNR certified firearms safety instructors. The DNR has OKd the resumption of classroom instruction with some concessions to covid; smaller class size, social distancing, and masks. We use to have each student handle each different type of action and operate them so they knew what they were. DNR says we can not do this unless we can disinfect the guns between students. When I took FAS 59 years ago I really enjoyed handling the guns. Does anyone know of a disinfectant that won't hurt the finish (blueing, wood, plastic and nickel) given that it would have to be applied multiple times?