Bed liner is for truck beds and undercoating is for soundproofing. I wouldn't want any chunky glop on my springs that isn't mud. Sandblast, wire brush, whatever you need to do to remove the crusty stuff and dirt. Remember you will need to de-grease also. Use paint. POR-15 works as advertised if you follow the directions. RustOleum would be my choice.
According to the National Shooting Sports Foundation, AR-15 sporting rifles account for nearly 20% of all U.S. firearms sales.
Progressive Liberalism: Bringing you new Healthcare ideas so wonderful, they have to include mandatory participation ......
Originally Posted by Ronald W. Reagan: Government is not the solution to our problems; Government is the problem.