How to easily achieve the effect of burnished metal for guns.
Color foundation is SLICK PRIMER, which has a light grey color tone.
Spread a first wash (thinning 1/1 with water) with Filter & Wash STEEL, and leave it to dry.
A second wash with Filter & Wash DARK AGEING (thinning 1/1 with water).
And this is everything you need for most guns.
Since the 12.7 has large cooling holes, add thin washes into recesses with Filter & Wash BLACK.
Use of the extremely pure True Earth's Filter & Washes favours a very realistic result, without overwhelming details, but instead exhaliting them.
The whole, as usual for True Earth's products, without any solvent nor smell.