Short and to the point "Black and Blue India Ink" for a mix of the two to get the right colour. Buy good quality Ink, when it is dry it is Water and Oil proof lasts a very long time. You can also use the black ink to bring out a guns engraving rather than purchasing more or less the same thing at a lot higher price under another name.
Appy quickley with a small soft artists brush, Try to do the aplication between the rib and the barrels in one quick brush stroke. Then follow straight away with a clean cloth wraped around your index finger to remove the excess ink before it dries.
Last edited by damascus; 12/05/17 05:23 AM. Reason: to add method