Touch up bluing pens? How good are they?

[mosinmaster]

I have some hairline scratches on a polished blue barrel. Will these pens match this blue lustre? And how durable are they?

 

[guntech]

No and not very.

 

[Mike Webb]

No, they won't be a colour match but the scratches will not jump out at you so bad.

 

[Donny Fenn1]

try a blue or black sharpie?

 

[hugh manuell]

For the touch-ups, the best I have tried is called "Black Magic". I forget where I got it, but I'm sure if you search around you will find it. It is not a pen, it is a liquid in a little bottle.

Hugh