Birchwood Casey Barricade Rust Protection Take-Alongs Gun Wipes are a firearms maintenance tool that rapidly drives out moisture from metal pores and deposits a transparent protective coating which seals the surface. Its the best way to protect firearms from rust. Withstands 500 hours in ASTM humidity test and 96 hours in ASTM salt spray test. Barricade Rust Protection for firearms is also an excellent penetrant for loosening rusty or frozen parts, as well as a good lubricant.