[Jim K]

For handguns, I use plain Zip-Loc freezer bags; they are inexpensive and come in two or three sizes. I spray the guns (not grips if wood) with G96 Gun Treatment and squeeze most of the air out of the bag. I keep the bags in cardboard boxes (most original boxes have room for the bag) in a safe with a Golden Rod dehumidifier. I have never tried to use a vacuum seal but have some guns kept in the bags for years with no problems.

Jim