ΔE 8.2, close: similar, with a visible difference side by side. Light Gun Metal is a little lighter than Iron Hands Steel.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Light Gun Metal is a little lighter than Iron Hands Steel.
The same difference applies the other way round: Iron Hands Steel is a little darker.
ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.
See Iron Hands Steel on the colour wheel See Light Gun Metal on the colour wheel
All matches: Iron Hands Steel equivalents · Light Gun Metal equivalents